Bulski, K., M. Ostafin, J. Czuszkiewicz, T. Kurek, M. Falkiewicz-Dulik, T. Suprovych, and Z. Pustova Z. “The Microbiological Air Quality in the st.Benedict Church in Cracow”. Podilian Bulletin: Agriculture, Engineering, Economics, no. 25, Dec. 2016, pp. 9-13, http://pb.pdatu.edu.ua/article/view/114591.