Paluszkiewicz, Renata. “Erosional-Denudational Valleys and Their Significance for the Reconstruction of the Late Glacial Environmental Conditions (The Drawsko Lakeland, NW Poland)”. Quaestiones Geographicae, vol. 30, no. 3, Oct. 2011, pp. 71-81, doi:10.2478/v10117-011-0028-7.