@article{DAN_1961_138_2_a2,
     author = {V. P. Gromyko},
     title = {A criterion for a $\pi d$-group to be special},
     journal = {Doklady Akademii Nauk},
     pages = {261--262},
     publisher = {mathdoc},
     volume = {138},
     number = {2},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_2_a2/}
}