ZIELIŃSKI, Wojciech. Memories of Professor Ryszard Zieliński. Acta Universitatis Lodziensis. Folia Oeconomica, [S. l.], v. 3, n. 302, 2014. Disponível em: https://czasopisma.uni.lodz.pl/foe/article/view/195. Acesso em: 8 dec. 2025.