Płuska, Ireneusz. “The Problems Connected With the Conservation of Stanisław Wyspianski’s Bas-Relief Macierzyństwo [Motherhood] Executed in Plasticine - Science and Art”. Przestrzenie Teorii, no. 9 (June 15, 2009): 207–213. Accessed May 18, 2024. https://pressto.amu.edu.pl/index.php/pt/article/view/12025.