[boost] function dispatch mismatch in graph_traits

Hi, I am having trouble making leda_graph wrapper for GRAPH<vtype, etype> class. In leda_graph.hpp the wrapper is defined as template<class vtype, class etype> ... vertices(const leda::GRAPH<vtype, etype>& g) { do_something; } Given this definition the right (and only way i think) to invoke it by expression vertices<vtype, etype>(G) My problem is that all internal graph routines invoke the function by expression vertices(G) I would appreciate any ideas about how can i redirect vertices(G) to vertices<vtype, etype>(G) where vtype = vrec etype = erec G = leda::GRAPH<vrec, erec> I am afraid that i might have to rewrite a wrapper for specifically leda::GRAPH<vrec, erec>. Can this be avoided. Thanks sandeep