1. Late Tertiary channel system in northern Libya and its implications on Mediterranean sea level changes;Barr,1973
2. Note illustrative della Carta Geologica d'Italia: foglio 71 Voghera;Bellinzona,1971
3. Terremoti;Belloni;Annu. Ecol. Lomb.,1973
4. Zur Geologie des Monte Generoso (Lombardische Alpen);Bernoulli;Beitr. Geol. Karte Schweiz, Neue Folge,1964