and SHWETA SHARMA, I.M. SHARMA*, H.S. NEGI. “Integrated Management of Collar Rot in Apple Caused by Phytophthora Cactorum”. Indian Phytopathology, vol. 67, no. 2, May 2014, pp. 168-73, https://epubs.icar.org.in/index.php/IPPJ/article/view/40917.