Reference

Ivan N. Bolotov, Mikhail Yu. Gofarov, Artyom A. Frolov, Yaroslava E. Kogut, Alexander M. Rykov (2013): Northern boundary of the range of the Clouded Apollo butterfly Parnassius mnemosyne (L.) (Papilionidae): climate influence or degradation of larval host plants? – Nota lepidopterologica – 36: 19 - 33.