Łajczak, Adam, et al. “The New Features of Landslide Relief Discovered Using Lidar – Case Study from Babia Góra Massif, Western Carpathian Mountains”. Quaestiones Geographicae, vol. 33, no. 3, Sept. 2014, pp. 77-88, doi:10.2478/quageo-2014-0031.