Rychak, N. L., and SvistunovaА. М. 1. “Urbansystem Air Quality Assessment By Lichenoindication Method (Illustrated Dzerzhinsky District Of Kharkov )”. Visnyk of V. N. Karazin Kharkiv National University Series «Еcоlogy», no. 1070 (1), 74-83. https://periodicals.karazin.ua/ecology/article/view/746.