@article{ADM_2012_14_2_a1,
     author = {M. Asaad and Piroska Cs\"org\H{o}},
     title = {Characterization of finite groups with some $S$-quasinormal subgroups of fixed order},
     journal = {Algebra and discrete mathematics},
     pages = {161--167},
     publisher = {mathdoc},
     volume = {14},
     number = {2},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2012_14_2_a1/}
}