@article{ADM_2009_4_a11,
     author = {Alessio Russo and Giovanni Vincenzi},
     title = {Groups with many generalized $FC$-subgroup},
     journal = {Algebra and discrete mathematics},
     pages = {158--166},
     publisher = {mathdoc},
     number = {4},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2009_4_a11/}
}