ZHU, Peiyu. Lagrange’s Theorem in Group Theory: Proof and Applications. Highlights in Science, Engineering and Technology, [S. l.], v. 47, p. 75–78, 2023. DOI: 10.54097/hset.v47i.8168. Disponível em: https://drpress.org/ojs/index.php/HSET/article/view/8168. Acesso em: 14 aug. 2026.