1. Studies on prenatal infections in children with unknown cause of mental retardation and examination of their mothers;Amrei;Journal of the Egyptian Society of Parasitology,1999
2. History and general epidemiology;Ashburn,1992
3. Seroepidemiology of toxoplasmosis in rehabilitation centers of Gilan province;Asmar,1999
4. Seroepidemiological survey of toxoplasmosis in La Guadeloupe, French West Indies;Barbier;American Journal of Tropical Medicine and Hygiene,1983
5. Clinical parasitology;Beaver,1984