1. Rust on Xanthium pungens in Australia;Alcorn;Australian Plant Pathology Society Newsletter,1975
2. Manual of the rusts in United States and Canada;Arthur,1962
3. Recent advances in the use of plant pathogens as biocontrol agents of weeds;Hasan;PANS,1974
4. Calendula rust and its control with Fermate;Hildebrand;Plant Disease Reporter,1948
5. New or noteworthy rusts on Carduaceae;Jackson;Mycologia,1922