TOPOLOGICAL  ANALYSIS  PROGRAM  FOR EXPERIMENTAL  STATIC  ELECTRON DENSITY BASED  ON  HANSEN-COPPENS  MULTIPOLE  FORMALISM

by

Carlo Gatti
Centro CNR per lo Studio delle Relazioni tra Struttura e Reattivita' Chimica, Milano, Italy

and

Anatoliy Volkov
Department of Chemistry, State University of New York at Buffalo, Buffalo, NY, USA