diff --git a/epwing.cc b/epwing.cc
index e1e5647e..d61ad57d 100644
--- a/epwing.cc
+++ b/epwing.cc
@@ -169,8 +169,12 @@ protected:
 private:
 
   /// Loads the article.
-  void loadArticle( quint32 address, string & articleHeadword,
-                    string & articleText, int & articlePage, int & articleOffset );
+  void loadArticle( quint32 address,
+                    string & articleHeadword,
+                    string & articleText,
+                    int & articlePage,
+                    int & articleOffset,
+                    QString word = 0 );
 
   void loadArticle( int articlePage, int articleOffset, string & articleHeadword,
                     string & articleText );
@@ -284,10 +288,15 @@ void EpwingDictionary::removeDirectory( QString const & directory )
 }
 
 void EpwingDictionary::loadArticle( quint32 address,
+
                                     string & articleHeadword,
+
                                     string & articleText,
+
                                     int & articlePage,
-                                    int & articleOffset )
+
+                                    int & articleOffset,
+                                    QString word)
 {
   vector< char > chunk;
 
@@ -307,7 +316,7 @@ void EpwingDictionary::loadArticle( quint32 address,
   try
   {
     Mutex::Lock _( eBook.getLibMutex() );
-    eBook.getArticle( headword, text, articlePage, articleOffset, false );
+    eBook.getArticle( headword, text, articlePage, articleOffset, false, word );
   }
   catch( std::exception & e )
   {
@@ -521,8 +530,16 @@ void EpwingArticleRequest::run()
 
     try
     {
-      dict.loadArticle( chain[ x ].articleOffset, headword, articleText,
-                        articlePage, articleOffset );
+      dict.loadArticle( chain[ x ].articleOffset,
+
+                        headword,
+
+                        articleText,
+
+                        articlePage,
+
+                        articleOffset,
+                        gd::toQString(word) );
     }
     catch(...)
     {
@@ -939,6 +956,107 @@ sptr< Dictionary::WordSearchRequest > EpwingDictionary::stemmedMatch(
 
 } // anonymous namespace
 
+void addWordToChunks( Epwing::Book::EpwingHeadword & head,
+                      ChunkedStorage::Writer & chunks,
+                      BtreeIndexing::IndexedWords & indexedWords,
+                      int & wordCount,
+                      int & articleCount )
+{
+  if( !head.headword.isEmpty() )
+  {
+    uint32_t offset = chunks.startNewBlock();
+    chunks.addToBlock( &head.page, sizeof( head.page ) );
+    chunks.addToBlock( &head.offset, sizeof( head.offset ) );
+
+    wstring hw = gd::toWString( head.headword );
+
+    indexedWords.addWord( hw, offset );
+    wordCount++;
+    articleCount++;
+
+    vector< wstring > words;
+
+    // Parse combined kanji/katakana/hiragana headwords
+
+    int w_prev = 0;
+    wstring word;
+    for( wstring::size_type n = 0; n < hw.size(); n++ )
+    {
+      gd::wchar ch = hw[ n ];
+
+      if( Folding::isPunct( ch ) || Folding::isWhitespace( ch ) || EpwingDictionary::isSign( ch )
+          || EpwingDictionary::isJapanesePunctiation( ch ) )
+        continue;
+
+      int w = EpwingDictionary::japaneseWriting( ch );
+
+      if( w > 0 )
+      {
+        // Store only separated words
+        gd::wchar ch_prev = 0;
+        if( n )
+          ch_prev = hw[ n - 1 ];
+        bool needStore = ( n == 0 || Folding::isPunct( ch_prev ) || Folding::isWhitespace( ch_prev )
+                           || EpwingDictionary::isJapanesePunctiation( ch ) );
+
+        word.push_back( ch );
+        w_prev = w;
+        wstring::size_type i;
+        for( i = n + 1; i < hw.size(); i++ )
+        {
+          ch = hw[ i ];
+          if( Folding::isPunct( ch ) || Folding::isWhitespace( ch ) || EpwingDictionary::isJapanesePunctiation( ch ) )
+            break;
+          w = EpwingDictionary::japaneseWriting( ch );
+          if( w != w_prev )
+            break;
+          word.push_back( ch );
+        }
+
+        if( needStore )
+        {
+          if( i >= hw.size() || Folding::isPunct( ch ) || Folding::isWhitespace( ch )
+              || EpwingDictionary::isJapanesePunctiation( ch ) )
+            words.push_back( word );
+        }
+        word.clear();
+
+        if( i < hw.size() )
+          n = i;
+        else
+          break;
+      }
+    }
+
+    if( words.size() > 1 )
+    {
+      // Allow only one word in every charset
+
+      size_t n;
+      int writings[ 4 ];
+      memset( writings, 0, sizeof( writings ) );
+
+      for( n = 0; n < words.size(); n++ )
+      {
+        int w = EpwingDictionary::japaneseWriting( words[ n ][ 0 ] );
+        if( writings[ w ] )
+          break;
+        else
+          writings[ w ] = 1;
+      }
+
+      if( n >= words.size() )
+      {
+        for( n = 0; n < words.size(); n++ )
+        {
+          indexedWords.addWord( words[ n ], offset );
+          wordCount++;
+        }
+      }
+    }
+  }
+}
+
 vector< sptr< Dictionary::Class > > makeDictionaries(
                                       vector< string > const & fileNames,
                                       string const & indicesDir,
@@ -1045,107 +1163,16 @@ vector< sptr< Dictionary::Class > > makeDictionaries(
 
             for( ; ; )
             {
-              if( !head.headword.isEmpty() )
-              {
-                uint32_t offset = chunks.startNewBlock();
-                chunks.addToBlock( &head.page, sizeof( head.page ) );
-                chunks.addToBlock( &head.offset, sizeof( head.offset ) );
-
-                wstring hw = gd::toWString( head.headword );
-
-                indexedWords.addWord( hw, offset );
-                wordCount++;
-                articleCount++;
-
-                vector< wstring > words;
-
-                // Parse combined kanji/katakana/hiragana headwords
-
-                int w_prev = 0;
-                wstring word;
-                for( wstring::size_type n = 0; n < hw.size(); n++ )
-                {
-                  gd::wchar ch = hw[ n ];
-
-                  if( Folding::isPunct( ch ) || Folding::isWhitespace( ch )
-                      || EpwingDictionary::isSign( ch ) || EpwingDictionary::isJapanesePunctiation( ch ) )
-                    continue;
-
-                  int w = EpwingDictionary::japaneseWriting( ch );
-
-                  if( w > 0 )
-                  {
-                    // Store only separated words
-                    gd::wchar ch_prev = 0;
-                    if( n )
-                      ch_prev = hw[ n - 1 ];
-                    bool needStore = ( n == 0
-                                       || Folding::isPunct( ch_prev )
-                                       || Folding::isWhitespace( ch_prev )
-                                       || EpwingDictionary::isJapanesePunctiation( ch ) );
-
-                    word.push_back( ch );
-                    w_prev = w;
-                    wstring::size_type i;
-                    for(  i = n + 1; i < hw.size(); i++ )
-                    {
-                      ch = hw[ i ];
-                      if( Folding::isPunct( ch ) || Folding::isWhitespace( ch )
-                          || EpwingDictionary::isJapanesePunctiation( ch ) )
-                        break;
-                      w = EpwingDictionary::japaneseWriting( ch );
-                      if( w != w_prev )
-                        break;
-                      word.push_back( ch );
-                    }
-
-                    if( needStore )
-                    {
-                      if( i >= hw.size() || Folding::isPunct( ch ) || Folding::isWhitespace( ch )
-                          || EpwingDictionary::isJapanesePunctiation( ch ) )
-                        words.push_back( word );
-                    }
-                    word.clear();
-
-                    if( i < hw.size() )
-                      n = i;
-                    else
-                      break;
-                  }
-                }
-
-                if( words.size() > 1 )
-                {
-                  // Allow only one word in every charset
-
-                  size_t n;
-                  int writings[ 4 ];
-                  memset( writings, 0, sizeof(writings) );
-
-                  for( n = 0; n < words.size(); n++ )
-                  {
-                    int w = EpwingDictionary::japaneseWriting( words[ n ][ 0 ] );
-                    if( writings[ w ] )
-                      break;
-                    else
-                      writings[ w ] = 1;
-                  }
-
-                  if( n >= words.size() )
-                  {
-                    for( n = 0; n < words.size(); n++ )
-                    {
-                      indexedWords.addWord( words[ n ], offset );
-                      wordCount++;
-                    }
-                  }
-                }
-
-              }
+              addWordToChunks( head, chunks, indexedWords, wordCount, articleCount );
               if( !dict.getNextHeadword( head ) )
                 break;
             }
 
+            while( dict.processRef( head ) )
+            {
+              addWordToChunks( head, chunks, indexedWords, wordCount, articleCount );
+            }
+
             dict.clearBuffers();
 
             // Finish with the chunks
diff --git a/epwing.hh b/epwing.hh
index 8ce85e26..ae46d1e0 100644
--- a/epwing.hh
+++ b/epwing.hh
@@ -2,14 +2,23 @@
 #define __EPWING_HH__INCLUDED__
 
 #include "dictionary.hh"
-
+#include "epwing_book.hh"
+#include "btreeidx.hh"
+#include "chunkedstorage.hh"
 /// Support for the Epwing dictionaries.
 namespace Epwing {
 
 using std::vector;
 using std::string;
 
-vector< sptr< Dictionary::Class > > makeDictionaries(
+void addWordToChunks( Epwing::Book::EpwingHeadword & head,
+                      ChunkedStorage::Writer & chunks,
+                      BtreeIndexing::IndexedWords & indexedWords,
+                      int & wordCount,
+                      int & articleCount );
+
+vector< sptr< Dictionary::Class > >
+makeDictionaries(
                                       vector< string > const & fileNames,
                                       string const & indicesDir,
                                       Dictionary::Initializing & )
diff --git a/epwing_book.cc b/epwing_book.cc
index 3abe85b4..f6eed69c 100644
--- a/epwing_book.cc
+++ b/epwing_book.cc
@@ -6,6 +6,7 @@
 #include <QDir>
 #include <QTextStream>
 #include <QTextDocumentFragment>
+#include <QHash>
 #include "gddebug.hh"
 #include "fsencoding.hh"
 #include "audiolink.hh"
@@ -732,7 +733,7 @@ QString EpwingBook::getText( int page, int offset, bool text_only )
   }
 
   QString text = QString::fromUtf8( buf.data(), buf.size() ).trimmed();
-  finalizeText( text );
+  finalizeText( text);
   return text;
 }
 
@@ -776,7 +777,9 @@ void EpwingBook::getReferencesFromText( int page, int offset )
   }
 
   for( int x = 0; x < refPages.size(); x++ )
+  {
     LinksQueue.push_back( EWPos( refPages[ x ], refOffsets[ x ] ) );
+  }
 }
 
 EB_Error_Code EpwingBook::forwardText( EB_Position & startPos )
@@ -850,60 +853,13 @@ void EpwingBook::getFirstHeadword( EpwingHeadword & head )
   fixHeadword( head.headword );
 
   EWPos epos( pos.page, pos.offset );
-  allHeadwordPositions[ head.headword ] << epos;
+  allHeadwordPositions[ ((uint64_t)pos.page)<<32|(pos.offset>>2) ] =true;
 }
 
 bool EpwingBook::getNextHeadword( EpwingHeadword & head )
 {
   EB_Position pos;
-
-  QRegularExpression badLinks( "#(v|n)\\d", QRegularExpression::UseUnicodePropertiesOption);
-
-  // At first we check references queue
-  while( !LinksQueue.isEmpty() )
-  {
-    EWPos epos = LinksQueue.last();
-    LinksQueue.pop_back();
-
-    pos.page = epos.first;
-    pos.offset = epos.second;
-
-    if( readHeadword( pos, head.headword, true ) )
-    {
-      if( head.headword.isEmpty()
-          || head.headword.contains( badLinks ) )
-        continue;
-
-      fixHeadword( head.headword );
-
-      head.page = pos.page;
-      head.offset = pos.offset;
-
-      if( allHeadwordPositions.contains( head.headword ) )
-      {
-        // existed position
-        bool existed = false;
-        foreach( EWPos epos, allHeadwordPositions[ head.headword ] )
-        {
-          if( pos.page == epos.first && abs( pos.offset - epos.second ) <= 4 )
-          {
-            existed = true;
-            break;
-          }
-        }
-        if( !existed )
-        {
-          allHeadwordPositions[ head.headword ] << EWPos( pos.page, pos.offset );
-          return true;
-        }
-      }
-      else
-      {
-        allHeadwordPositions[ head.headword ] << EWPos( pos.page, pos.offset );
-        return true;
-      }
-    }
-  }
+  
 
   // No queued positions - forward to next article
 
@@ -934,13 +890,7 @@ bool EpwingBook::getNextHeadword( EpwingHeadword & head )
 
     indexHeadwordsPosition = pos;
 
-    try
-    {
-      getReferencesFromText( pos.page, pos.offset );
-    }
-    catch( std::exception & )
-    {
-    }
+
 
     head.page = pos.page;
     head.offset = pos.offset;
@@ -953,27 +903,17 @@ bool EpwingBook::getNextHeadword( EpwingHeadword & head )
 
     fixHeadword( head.headword );
 
-    if( allHeadwordPositions.contains( head.headword ) )
+    try
     {
-      // existed position
-      bool existed = false;
-      foreach( EWPos epos, allHeadwordPositions[ head.headword ] )
-      {
-        if( pos.page == epos.first && abs( pos.offset - epos.second ) <= 4 )
-        {
-          existed = true;
-          break;
-        }
-      }
-      if( !existed )
-      {
-        allHeadwordPositions[ head.headword ] << EWPos( pos.page, pos.offset );
-        return true;
-      }
+      getReferencesFromText( pos.page, pos.offset);
     }
-    else
+    catch( std::exception & )
     {
-      allHeadwordPositions[ head.headword ] << EWPos( pos.page, pos.offset );
+    }
+
+    if( !allHeadwordPositions.contains( ((uint64_t)pos.page) << 32 | ( pos.offset / 4 ) ) )
+    {
+      allHeadwordPositions[ ((uint64_t)pos.page) << 32 | ( pos.offset / 4 ) ] = true;
       return true;
     }
   }
@@ -981,6 +921,43 @@ bool EpwingBook::getNextHeadword( EpwingHeadword & head )
   return true;
 }
 
+bool EpwingBook::processRef( EpwingHeadword & head)
+{
+  EB_Position pos;
+
+  QRegularExpression badLinks( "#(v|n)\\d", QRegularExpression::UseUnicodePropertiesOption );
+  while( !LinksQueue.isEmpty() )
+  {
+    EWPos epos = LinksQueue.last();
+    LinksQueue.pop_back();
+
+    pos.page   = epos.first;
+    pos.offset = epos.second;
+
+    if( readHeadword( pos, head.headword, true ) )
+    {
+      if( head.headword.isEmpty() || head.headword.contains( badLinks ) )
+        continue;
+
+      fixHeadword( head.headword );
+
+      head.page   = pos.page;
+      head.offset = pos.offset;
+      auto key    = ( (uint64_t)pos.page ) << 32 | ( pos.offset >> 2 );
+      if( !allRefPositions.contains( key ) )
+      {
+        // fixed the reference headword ,to avoid the headword collision with other entry .
+        //if(!allHeadwordPositions.contains(key))
+        head.headword = QString( "r%1At%2" ).arg( pos.page ).arg( pos.offset );
+
+        allRefPositions[ key ] = true;
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
 bool EpwingBook::readHeadword( EB_Position const& pos,
                                QString & headword,
                                bool text_only )
@@ -1094,7 +1071,7 @@ void EpwingBook::fixHeadword( QString & headword )
 }
 
 void EpwingBook::getArticle( QString & headword, QString & articleText,
-                             int page, int offset, bool text_only)
+                             int page, int offset, bool text_only, QString word)
 {
   error_string.clear();
   char buffer[ TextBufferSize + 1 ];
@@ -1126,12 +1103,12 @@ void EpwingBook::getArticle( QString & headword, QString & articleText,
   }
 
   headword = QString::fromUtf8( buffer, length );
-  finalizeText( headword );
+  finalizeText( headword);
 
   if( text_only )
     fixHeadword( headword );
 
-  articleText = getText( pos.page, pos.offset, text_only );
+  articleText = getText( pos.page, pos.offset, text_only);
 }
 
 const char * EpwingBook::beginDecoration( unsigned int code )
@@ -1268,7 +1245,7 @@ void EpwingBook::finalizeText( QString & text )
     {
       QString headword = QString::fromUtf8( buf, length );
       fixHeadword( headword );
-      url.setPath( Utils::Url::ensureLeadingSlash( headword ) );
+      url.setPath( Utils::Url::ensureLeadingSlash( QString( "r%1At%2" ).arg( ebpos.page ).arg(ebpos.offset) ) );
     }
 
     QString link = "<a href=\"" + url.toEncoded() + "\">";
diff --git a/epwing_book.hh b/epwing_book.hh
index 558d4684..e5b00f0f 100644
--- a/epwing_book.hh
+++ b/epwing_book.hh
@@ -78,7 +78,8 @@ class EpwingBook
   QStringList imageCacheList, soundsCacheList, moviesCacheList, fontsCacheList;
   QMap< QString, QString > baseFontsMap, customFontsMap;
   QVector< int > refPages, refOffsets;
-  QMap< QString, QList< EWPos > > allHeadwordPositions;
+  QMap< uint64_t,bool > allHeadwordPositions;
+  QMap< uint64_t, bool > allRefPositions;
   QVector< EWPos > LinksQueue;
   int refOpenCount, refCloseCount;
   static Mutex libMutex;
@@ -98,7 +99,7 @@ class EpwingBook
   EB_Error_Code forwardText( EB_Position & startPos );
 
   // Retrieve article text from dictionary
-  QString getText( int page, int offset, bool text_only );
+  QString getText( int page, int offset, bool text_only);
 
   unsigned int normalizeDecorationCode( unsigned int code );
 
@@ -151,6 +152,7 @@ public:
   void clearBuffers()
   {
     allHeadwordPositions.clear();
+    allRefPositions.clear();
     LinksQueue.clear();
   }
 
@@ -181,6 +183,8 @@ public:
   // Find next headword and article position
   bool getNextHeadword( EpwingHeadword & head );
 
+  bool processRef( EpwingHeadword & head );
+
   bool readHeadword( EB_Position const & pos,
                      QString & headword,
                      bool text_only );
@@ -191,7 +195,7 @@ public:
 
   // Retrieve article from dictionary
   void getArticle( QString & headword, QString & articleText,
-                   int page, int offset, bool text_only );
+                   int page, int offset, bool text_only, QString word=0 );
 
   const char * beginDecoration( unsigned int code );
   const char * endDecoration( unsigned int code );