Szmidt, A., and L. Wachecka-Kotkowska. “Relations Between Present Relief on the Border of Lowlands and Highlands and Geological Structures of the Paleozoic Platform – a Case Study from Central Poland”. Geology, Geophysics and Environment, vol. 45, no. 1, Apr. 2019, p. 57, doi:10.7494/geol.2019.45.1.57.