“Robert I. Frost, After the Deluge. Poland-Lithuania and the Second Northern War 1655-1660”. Zeitschrift für Ostmitteleuropa-Forschung 45, no. 3 (August 22, 1996): 446–447. Accessed September 16, 2026. https://openjournals.osmikon.de/zfo/article/view/6157.