TEAM, S. Falling Shadow Theory Applied to UP-Algebras: Young Bae Jun, Kyoung Ja Lee, Aiyared Iampan. Thai Journal of Mathematics, [S. l.], v. 17, n. 1, p. 1–9, 2019. Disponível em: https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/870. Acesso em: 3 jul. 2024.