Haake, M. “THE MEANING OF EXISTENCE AND ART IN THE PAINTING ’PIETA’ BY TADEUSZ BORUTA (Sens egzystencji i sztuki w swietle obrazu Pieta Tadeusza Boruty): The Meaning of Existence and Art in the painting Pietà by Tadeusz Boruta”. Sacrum et Decorum, no. 4, Dec. 2011, pp. 80-94, https://journals.ur.edu.pl/setde/article/view/4932.