GER, Roman. The alienation phenomenon and associative rational operations. Annales Mathematicae Silesianae, [S. l.], v. 27, p. 75–88, 2013. Disponível em: https://trrest.vot.pl/ojsus/index.php/AMSIL/article/view/14004. Acesso em: 4 jul. 2025.