Groups Covered by an Infinite Number of Abelian Subgroups. - Károly Podoski (Comb., 2001)

The maximal subgroups and the complexity of the flow semigroup of finite (di)graphs. - Gábor Horváth 004; Chrystopher L. Nehaniv; Károly Podoski (Int. J. Algebra Comput., 2017)