KUBAS, Sebastian. Similarities and differences of main left wing parties in Poland and Hungary: The case of SLD and MSzP in comparative perspective (1989—2014). Studia Politicae Universitatis Silesiensis, [S. l.], v. 13, 2017. Disponível em: https://journals.us.edu.pl/index.php/SPUS/article/view/5468. Acesso em: 5 grudz. 2025.