Kondratyuk, S. Y., J. A. Elix, I. A. Galanina, L. S. Yakovchenko, I. Kärnefelt, and A. Thell. “Four New Caloplaca Species (Teloschistaceae, Ascomycotina)”. Folia Cryptogamica Estonica, Vol. 48, Oct. 2011, pp. 17-23, https://ojs.utlib.ee/index.php/FCE/article/view/13629.