B.B.L. THAKORE, ANILA DOSHI and. “Sources of Resistant to Downy Mildew Disease of Opium Poppy”. Indian Phytopathology, vol. 48, no. 3, Jan. 2002, pp. 339-41, https://epubs.icar.org.in/index.php/IPPJ/article/view/20784.