KAMAL, R K. VERMA AND. “Pyrenula Corticola Sp. Nov., a Bark Inhabiting Ascomycete from Uttar Pradesh”. Indian Phytopathology, vol. 43, no. 4, Jan. 2002, pp. 568-9, https://epubs.icar.org.in/index.php/IPPJ/article/view/22685.