diff --git a/smp/src/bimap.cpp b/smp/src/bimap.cpp
new file mode 100644
index 000000000..dafd11e19
--- /dev/null
+++ b/smp/src/bimap.cpp
@@ -0,0 +1,79 @@
+/*
+<bimap.cpp>
+Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2012
+
+Alexandre Quemy, Thibault Lasnier - INSA Rouen
+
+This software is governed by the CeCILL license under French law and
+abiding by the rules of distribution of free software.  You can  ue,
+modify and/ or redistribute the software under the terms of the CeCILL
+license as circulated by CEA, CNRS and INRIA at the following URL
+"http://www.cecill.info".
+
+In this respect, the user's attention is drawn to the risks associated
+with loading,  using,  modifying and/or developing or reproducing the
+software by the user in light of its specific status of free software,
+that may mean  that it is complicated to manipulate,  and  that  also
+therefore means  that it is reserved for developers  and  experienced
+professionals having in-depth computer knowledge. Users are therefore
+encouraged to load and test the software's suitability as regards their
+requirements in conditions enabling the security of their systems and/or
+data to be ensured and,  more generally, to use and operate it in the
+same conditions as regards security.
+The fact that you are presently reading this means that you have had
+knowledge of the CeCILL license and that you accept its terms.
+
+ParadisEO WebSite : http://paradiseo.gforge.inria.fr
+Contact: paradiseo-help@lists.gforge.inria.fr
+*/
+
+template<class A, class B>
+void paradiseo::smp::Bimap<A,B>::add(A& a, B& b)
+{
+    rightAssociation[a] = b;
+    leftAssociation[b] = a;
+}
+
+template<class A, class B>
+std::map<A,B> paradiseo::smp::Bimap<A,B>::getRight() const
+{
+    return rightAssociation;
+}
+
+template<class A, class B>
+std::map<B,A> paradiseo::smp::Bimap<A,B>::getLeft() const
+{
+    return leftAssociation;
+}
+
+template<class A, class B>    
+void paradiseo::smp::Bimap<A,B>::removeFromRight(const A& a)
+{
+    for(auto& it : leftAssociation)
+        if(it->second == a)
+            leftAssociation.erase(it);
+        
+    rightAssociation.erase(a);
+}
+
+template<class A, class B>    
+void paradiseo::smp::Bimap<A,B>::removeFromLeft(const B& b) 
+{
+    for(auto& it : rightAssociation)
+        if(it->second == b)
+            rightAssociation.erase(it);
+       
+    leftAssociation.erase(b);
+}
+
+template<class A, class B>    
+unsigned paradiseo::smp::Bimap<A,B>::size() const
+{
+    return leftAssociation.size();
+}   
+
+template<class A, class B>  
+bool paradiseo::smp::Bimap<A,B>::empty() const
+{
+    return leftAssociation.empty();
+}