@article{01450245,
title = {Subgroups of },
journal = {Commentationes Mathematicae Universitatis Carolinae},
volume = {39},
year = {1998},
pages = {371-378},
zbl = {0937.54023},
language = {en},
url = {http://dml.mathdoc.fr/item/01450245}
}
Hernández, Constancio; Tkačenko, Michael. Subgroups of . Commentationes Mathematicae Universitatis Carolinae, Tome 39 (1998) pp. 371-378. http://gdmltest.u-ga.fr/item/01450245/