1. Stability of faecal egg excretion in Schistosoma mansoni infection;Barreto;Transactions of the Royal Society of Tropical Medicine and Hygiene,1978
2. A simple device tor quantitative determination of Schistosoma mansoni eggs in faeces examined by the thick smear technique;Katz;Revista do Instituto de Medicina Tropical de São Paulo,1972
3. Control of schistosomiasis: morbidity-reduction and chemotherapy;Mott;Acta Leidensia,1982
4. Advances in epidemiology survey methodology and techniques in schistosomiasis;Mott;Bulletin of the World Health Organization,1980
5. Comparison of nitration staining (Bell) and thick smear (Kato) for the detection and quantitation of Schistosoma mansoni eggs in faeces;Sleigh;Transactions of the Royal Society of Tropical Medicine and Hygiene,1982