@article{ADM_2003_1_a5,
     author = {Leonid A. Kurdachenko and Javier Otal},
     title = {Direct decompositions of artinian modules related to formations of groups},
     journal = {Algebra and discrete mathematics},
     pages = {68--76},
     publisher = {mathdoc},
     number = {1},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2003_1_a5/}
}