Szmyd, Piotr. 2017. “Using Geografic Information System (GIS) Tools to Determine the Settlement Preferences in the Upper Wisłoka Valley and to Demarcate Potential Archeological Sites on the Example of Early Medieval Sites”. Ana­lecta Archa­eolo­gica Res­so­viensia 12 (December):299-328. https://doi.org/10.15584/anarres.2017.12.17.