A.P. SINGH, J.N. SINHA and. Cleistothecial stage of Erysiphe polygoni on cowpea leaves. Indian Phytopathology, India, v. 47, n. 1, p. 113–115, 2002. Disponível em: https://epubs.icar.org.in/index.php/IPPJ/article/view/21019. Acesso em: 25 jun. 2026.