@article{RSMUP_1992__87__267_0,
     author = {Brandl, Rolf and Verardi, Libero},
     title = {Finite groups with few conjugacy classes of subgroups},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {267--280},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {87},
     year = {1992},
     mrnumber = {1183911},
     zbl = {0789.20020},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1992__87__267_0/}
}