SOKOŁOWSKI, J. Rafał Kowalczyk (1972–2015). Slavica Wratislaviensia, [S. l.], v. 162, p. 157–159, 2016. DOI: 10.19195/0137-1150.162.17. Disponível em: https://wuwr.pl/swr/article/view/4309. Acesso em: 8 kwi. 2025.