Korb, S.K. “Contribution to the Systematics and Nomenclature of the Checkerspots of the Group Melitaea Minerva Staudinger, 1881 (Lepidoptera, Nymphalidae)”. Acta Biologica Sibirica 5, no. 3 (September 29, 2019): 139-145. Accessed April 18, 2021. http://journal.asu.ru/biol/article/view/6535.