@article{PFMT_2019_2_a12,
     author = {N. S. Kosenok and V. M. Selkin and V. N. Mitsik and V. N. Rizhik},
     title = {On finite semi-$\pi$-special groups},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {88--91},
     publisher = {mathdoc},
     number = {2},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2019_2_a12/}
}