AHMED, M. .; BADAWY, A. E.-M. .; EL-SEIDY, E. .; GABER, A. . On <u><i>PGK</i></u><sub>2</sub>-algebras and Perfect Extensions. Contemporary Mathematics, [S. l.], v. 6, n. 1, p. 617–634, 2025. DOI: 10.37256/cm.6120255369. Disponível em: https://ojs.wiserpub.com/index.php/CM/article/view/5369. Acesso em: 18 jan. 2025.