Karpińska, M. (2026). The Story of a Turbulent Friendship. Karol Sienkiewicz and Piotr Kopczyński: Schoolmates at the Krzemieniec Lyceum: Friends – Neighbours – Political Opponents. In J. Kita & M. Korybut-Marciniak (Eds.), & (Ed.), Relacje – więzi – parantele (Vols. 14, pp. 295-308). Lodz University Press. https://doi.org/10.18778/8445-168-7.17