M.L. GUPTA AND R.N. SINGH, RAKESH PANDEY, S. KUMAR,. Root-knot disease on opium poppy - A new disease record. Indian Phytopathology, India, v. 52, n. 1, p. 100–102, 2002. Disponível em: https://epubs.icar.org.in/index.php/IPPJ/article/view/19472. Acesso em: 3 jun. 2026.