1. M. P. T. ALERS, A. BLOM, C. SIKUBWABO KIYENGO, and T. MASUNDA (1989 )Reconnaissance des Elephants de Foret au Zaire. Rapport de Mission. Typescript report, WCI/IZCN/WWF, Kinshasa. 26 pp.
2. R. F. W. BARNES, M. P. T. ALERS, and A. BLOM (1989 )The Poor Man's Guide to Counting Elephant Faeces in Forests, First Draft. Unpubl. Typescript. Wildlife Conservation International, New York.
3. R. F. W. BARNES, and K. L. JENSEN (1986 )Forest Elephant Survey: Progress Report for Second Half of 1986. Typescript, Wildlife Conservation International, New York.