1. Méthodes d'analyse de données pour la détection et la description de structures;Bergonier,1973
2. FORTRAN IV program for Q-mode analysis of nonquantitative data using IBM/7090/7094 computers;Bonham-Carter;Kansas Geol. Survey Computer Contr.,1967
3. Pattern recognition and geochemical data;Dagbert,1974
4. Computer programming in quantitative biology;Davies,1971
5. Statistics and data analysis in geology;Davis,1973