@article{PFMT_2014_1_a9,
     author = {Abid Mahboob and Lijun Huo and Jinghua Lu},
     title = {On semi cover-avoiding or $S$-quasinormally embedded subgroups of finite groups},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {57--62},
     publisher = {mathdoc},
     number = {1},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2014_1_a9/}
}