POPIŞTER, I., SLÍŽKOVÁ, Zuzana, HAVELCOVÁ, Martina, SÝKOROVÁ, Ivana, ZEMAN, Antonín. The effects of air pollution on the statue of Saint George and the Dragon in Cluj-Napoca, Romania. International Journal of Conservation Science. 2013, 4(SI), 563-572. ISSN 2067-533X. E-ISSN 2067-8223. Dostupné z: http://www.ijcs.uaic.ro/current.html