and SANJEEV SHARMA, N. S. V. T. J. M. S. P. K. (2009). Epidemiology of Marssonina blotch (Marssonina coronaria) of apple in India. Indian Phytopathology, 62(3), 348-359. https://epubs.icar.org.in/index.php/IPPJ/article/view/12602