@article{10_1017_S2040618500033414,
     author = {McLain, D. H.},
     title = {Remarks on the {Upper} {Centralc} {Series} of a {Group}},
     journal = {Glasgow mathematical journal},
     pages = {38--44},
     year = {1956},
     volume = {2},
     number = {1},
     doi = {10.1017/S2040618500033414},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S2040618500033414/}
}