diff --git a/eo/AUTHORS b/eo/AUTHORS
index ca63a12d..1d6304e8 100644
--- a/eo/AUTHORS
+++ b/eo/AUTHORS
@@ -6,5 +6,6 @@ Gustavo Romero Lopez
 Maarten Keijzer
 Marc Schoenauer
 Jeroen Eggermont
-Jochen Küpper
+Jochen Kpper
 Thomas Legrand
+Clive Canape
diff --git a/eo/src/continuator.h b/eo/src/continuator.h
deleted file mode 100644
index 97efc8ac..00000000
--- a/eo/src/continuator.h
+++ /dev/null
@@ -1,91 +0,0 @@
-// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
-
-//-----------------------------------------------------------------------------
-// continuator.h
-// (c) GeNeura Team, 1998
-/*
-    This library is free software; you can redistribute it and/or
-    modify it under the terms of the GNU Lesser General Public
-    License as published by the Free Software Foundation; either
-    version 2 of the License, or (at your option) any later version.
-
-    This library is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-    Lesser General Public License for more details.
-
-    You should have received a copy of the GNU Lesser General Public
-    License along with this library; if not, write to the Free Software
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-
-    Contact: todos@geneura.ugr.es, http://geneura.ugr.es
- */
-//-----------------------------------------------------------------------------
-
-#ifndef _CONTINUATOR_H
-#define _CONTINUATOR_H
-
-
-#include <eoFunctor.h>
-#include <data.h>
-
-#include <eoContinue.h>
-#include <eoSelectOne.h>
-
-/**
- * Continue interface
- */
-class continuator
-{
-public: 	
-	virtual bool check()=0;
-};
-
-
-template < class EOT> class eoContinuator : public continuator{
-public:
-	
-	eoContinuator(eoContinue<EOT> & _cont, const eoPop<EOT> & _pop): cont (_cont), pop(_pop){}
-	
-	virtual bool check(){
-		return cont(pop);	
-	}
-
-protected:
-	eoContinue<EOT> & cont ;
-	const eoPop<EOT> & pop;
-};
-
-
-
-template < class TYPE>  class selector
-{
-public: 	
-	virtual const TYPE & select()=0;
-};
-
-
-template < class EOT> class eoSelector : public selector<EOT>{
-public:
-	
-	eoSelector(eoSelectOne<EOT> & _select, const eoPop<EOT> & _pop): selector (_select), pop(_pop){}
-	
-	virtual const EOT & select(){
-		return select(pop);	
-	}
-
-protected:
-	eoSelectOne<EOT> & selector ;
-	const eoPop<EOT> & pop;
-};
-
-#endif
-
-
-
-
-
-
-
-
-
diff --git a/eo/src/eoPop.h b/eo/src/eoPop.h
index a6ea147c..f8d75854 100644
--- a/eo/src/eoPop.h
+++ b/eo/src/eoPop.h
@@ -125,6 +125,16 @@ class eoPop: public std::vector<EOT>, public eoObject, public eoPersistent
           bool operator()(const EOT* a, const EOT* b) const
             { return b->operator<(*a); }
       };
+  /// helper struct for comparing (EA or PSO) 
+      struct Cmp2 
+	  {
+		bool operator()(const EOT & a,const EOT & b) const
+    	{
+    		return b.operator<(a);	
+    	}
+	  };
+      
+      
 
     /**
     sort the population. Use this member to sort in order
@@ -132,7 +142,7 @@ class eoPop: public std::vector<EOT>, public eoObject, public eoPersistent
    */
   void sort(void)
   {
-      std::sort(begin(), end(), std::greater<EOT>());
+      std::sort(begin(), end(), Cmp2());
   }
 
   /** creates a std::vector<EOT*> pointing to the individuals in descending order */
diff --git a/eo/src/eoVectorParticle.h b/eo/src/eoVectorParticle.h
index b7eadc5c..ecb80a2e 100644
--- a/eo/src/eoVectorParticle.h
+++ b/eo/src/eoVectorParticle.h
@@ -119,6 +119,15 @@ public:
     {
         velocities.resize (_size);
     }
+    
+    /// to avoid conflicts between EA and PSO
+    bool operator<(const eoVectorParticle<FitT, PositionType, VelocityType >& _eo) const
+        {
+        	if (_eo.best() > this->best())
+    			return true;
+    		else
+    			return false;
+        }
 
     /**
     * Print-on a vector-particle