@article{ADM_2011_11_1_a5,
     author = {Vladimir V. Kirichenko and Leonid A. Kurdachenko and Igor Ya. Subbotin},
     title = {Some related to pronormality subgroup families and the properties of a group},
     journal = {Algebra and discrete mathematics},
     pages = {75--108},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2011_11_1_a5/}
}