@article{10_1017_S0017089520000051,
     author = {HU, BIN and HUANG, JIANHONG and SKIBA, ALEXANDER N.},
     title = {ON {THE} {\ensuremath{\sigma}-NILPOTENT} {NORM} {AND} {THE} {\ensuremath{\sigma}-NILPOTENT} {LENGTH} {OF} {A} {FINITE} {GROUP}},
     journal = {Glasgow mathematical journal},
     pages = {121--132},
     year = {2021},
     volume = {63},
     number = {1},
     doi = {10.1017/S0017089520000051},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089520000051/}
}