1. Parasitism and the Platyhelminths;Kearn,1998
2. Glands associated with the anterior adhesive areas and body margins in the skin-parasitic monogenean Entobdella soleae;El-Naggar;Int. J. Parasitol.,1983
3. Microhabitat and movement of the viviparous monogeneans Gyrodactylus alberti, Macrogyrodactylus clarii and M. congolensis from the Nile catfish Clarias gariepinus;El-Naggar;J. Egypt Ger. Soc. Zool.,2001
4. The cephalic glands and associated structures in Gyrodactylus eucaliae Ikezaki and Hoffman, 1957 (Monogenea: Gyrodactylidae);Kritsky;Proc. Helminthol. Soc. Wash.,1978
5. Scanning electron microscope studies on the head lobes and haptor of the monogenean Gyrodactylus groschafti Ergens, 1973;El-Naggar;J. Egypt Ger. Soc. Zool.,1992