A. Liivamägi, V. Kuusemets, J. Luig, and K. Kask, “Changes in the distribution of Clouded Apollo <i>Parnassius mnemosyne</i> (Lepidoptera: Papilionidae) in Estonia”, Entomol. Fennica, vol. 24, no. 3, pp. 186–192, Dec. 2013.