(and many others)

Aringoli, D. and many others; (and many others) 1997. Geomorphology and Quaternary evolution of Central Italy (in: Fourth Intern. Conference on Geomorphology). Geografia Fisica e Dinamica Quaternaria (Suppl.), 3 (2): 79-103, 19 figs.

Boaz, N.T.; Bernor, R.L.; Brooks, A.S.; Cooke, H.B.S.; Geinzelin, J.de; Dechamps, R.; Delson, E.; Gentry, A.W.; Harris, J.W.K.; Meylan, P. and others; (and many others) 1992. A new evaluation of the significance of the Late Neogene Lusso Beds, Upper Semliki Valley, Zaire. Journal of Human Evolution 22: 505-517.