Brown, Kenneth S.Thévenaz, Jacques2008-12-162008-12-162008-12-16198810.1016/0021-8693(88)90268-2https://infoscience.epfl.ch/handle/20.500.14299/32700number of chainsp-perfectnormal closurep-group quotientweak cone pointsthird Sylow theoremA generalization of Sylow's third theoremtext::journal::journal article::research article