1. Structure and in vitro assembly of papaya mosaic virus;AbouHaidar,1985
2. Commonwealth Mycological Institute/Association of Applied Biologists (CMI/AAB) Description of Plant Viruses, No. 200, August 1978 (Potexvirus Group) and No. 354, December 1989 (potato virus X)
3. Potexvirus Group;Francki,1985
4. Potexviruses;White,1995