@article{DAN_1960_132_3_a14,
     author = {K. K. Shchukin},
     title = {$RI^*$-solvable radical of groups},
     journal = {Doklady Akademii Nauk},
     pages = {541--544},
     publisher = {mathdoc},
     volume = {132},
     number = {3},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_132_3_a14/}
}