Babczyński, Tomasz, Tomasz Kubik, Roman Ptak, i Grzegorz Strauchold. 2017. „GIS As a Tool to Analyze the History of Silesia and the Changes in Its Political (and Cultural) Geography”. Studia Geohistorica, nr 4 (sierpień):113-41. https://doi.org/10.12775/SG.2016.09.