T. Grabarczyk, J. Kita, M. Pogońska-Pol, and M. Voloshchuk, Eds., “Non-Dynastic Elites of the Ruthenian (?) Origin in the Military Service of the Piasts of the End of the 12th – the First Half of the 14th Century. Some Anthroponymical Observations”, in Narzędzia wojny, vol. 8, Poland: Lodz University Press, 2023, pp. 37–53. doi: 10.18778/8331-314-6.03.