4Roberts J A, Suhardono. Approaches to the Control of fasciolosis in ruminants[J]. Int J Parasitol, 1996, 26(8-9): 971-981.
5Chauvin A, Bouvet G, Boulard C. Humoral and cellular immune responses to Fasciola hepatica experimental primary and secondary infection in sheep[J]. Int J Parasitol, 1995, 25(10) : 1227-1241.