1. Benigno & A’Brook, Ann. appl. Biol. 72: 43, 1972.
2. Bakker, Neth, J. Pl. Path. 76: 53, 1970.
3. Bakker, Agric. Res. Reports 829: 152 pp., 1974.
4. Catherall, Pl. Path. 19: 101, 1970.
5. Serjeant, Ann. appl. Biol. 59: 31, 1967.
6. Ou, in Rice Diseases, Commonwealth Mycological lnstitute, Kew, 368 pp., 1972.