K. Bidjeh, C. Diguimbaye, P. Hendrikx, V. Dedet, D. Tchari, and S. Naïssingar, “Maternal immunity in young goats or sheep whose dams were vaccinated with anti-peste des petits ruminants vaccine”, Cah. Agric., vol. 8, no. 3, pp. 219–222 (1), May 1999.