1. Abcede, 1973. Operation snail. World Health Organisation, 28-33.
2. Appleton, C.C., Madsen, H., 1998. Are the medical malacologists in danger of becoming an endangered species in Africa? Proceedings of ‘Workshop on Medical Malacology in Africa. Harare, Zimbabwe, September, 22–26, 1997: 1–8. Eds. Madsen H., Appleton C.C. & Chimbari M.; Danish Bilharziasis Laboratory, Denmark.
3. Contribution à l’étude épidemiologique de la schistosomose à Schistosoma haematobium (Bilharz 1852) au Maroc;Camerlynck;Maroc Médical,1974
4. Doumenge, J.P., Mott, K.E., Cheung, C., Villenave, D., Chapuis, O., Perrin, M.F., Reaud-Thomas, G., 1987. Atlas of the global distribution of schistosomiasis. Talence, CEGET-CNRS, Geneva, WHO.
5. Snails and aquatic vegetation in Gezira irrigation canals;Hilali;J. Trop. Med. Hyg.,1985