1. Hydatidosis of the orbit;Abdel Baki;J. Egyptian Soc. Parasitology,1985
2. Orbital hydatid cyst: assessment of two cases;Alparslan;Neuroradiol.,1990
3. Retrobulbar hydatid cyst in the horse;Barnett;Equine vet. J.,1988
4. British National Formulary 1994
5. Sophisticated instrumentation and ophthalmic ultrasonography;Buschmann;Acta Ophthal.,1992