Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1997_61_5_a12, author = {V. N. Tyutyanov}, title = {On the existence of solvable normal subgroups in finite groups}, journal = {Matemati\v{c}eskie zametki}, pages = {755--758}, publisher = {mathdoc}, volume = {61}, number = {5}, year = {1997}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1997_61_5_a12/} }
V. N. Tyutyanov. On the existence of solvable normal subgroups in finite groups. Matematičeskie zametki, Tome 61 (1997) no. 5, pp. 755-758. http://geodesic.mathdoc.fr/item/MZM_1997_61_5_a12/