Papciak, T., I. Malik, K. Krzemień, M. Wistuba, E. Gorczyca, D. Wrońska-Wałach, and M. Sobucki. “Precipitation As a Factor Triggering Landslide Activity in the Kamień Massif (Beskid Niski Mts, Western Carpathians)”. Bulletin of Geography. Physical Geography Series, no. 8, July 2015, pp. 5-17, doi:10.2478/7013.