Szmyd, P. 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, (Dec. 2017), 299–328. DOI:https://doi.org/10.15584/anarres.2017.12.17.