Łukasz Quirini-Popławski, N. Kudła, and M. Rytynski, “Tourism in the Soviet Carpathians: Accommodation facilities for qualified tourism in the Eastern Carpathians (Lviv and Ivano-Frankivsk oblast) in the 1970s and 1980s”, Tour, vol. 29, no. 2, pp. 113–122, Dec. 2019.