PONIATOWSKA, Irena. Chopin - Grottger. Interdisciplinary Studies in Musicology, [S. l.], v. 9, p. 101–114, 2010. DOI: 10.14746/ism.2010.9.6. Disponível em: https://pressto.amu.edu.pl/index.php/ism/article/view/14983. Acesso em: 3 oct. 2026.