Trombetti, Marco. Non-Abelian Groups With Many Abelian Subgroups. Vol. 1. FedOAPress - ATPAM-DLS: Advanced Topics in Pure and Applied Mathematics: Doctoral Lecture Series. SHARE Books, 2025. Accessed October 9, 2026. https://www.fedoabooks.unina.it/index.php/fedoapress/catalog/book/607.