Anusik Z. Who was countess Dorothea von Helfenstein? A contribution to the genealogy of the Kurzbach and the Helfenstein families in the 15th century. PNH [Internet]. 2017 Nov. 5 [cited 2026 Mar. 30];16(3):225-40. Available from: https://czasopisma.uni.lodz.pl/pnh/article/view/3190