Janiga, M., and Ľ. Kubašková. “The Biology of the Alpine Accentor Prunella Collaris. III. The Coevolution of Alpine Accentors and Lice (Phthiraptera).”. Oecologia Montana 9, no. 1-2 (December 1, 2000): 24-28. Accessed April 21, 2019. https://om.vuvb.uniza.sk/index.php/OM/article/view/118.