@article{10_1017_S0017089500030524,
     author = {Bryce, R. A. and Rylands, L. J.},
     title = {A note on groups with non-central norm},
     journal = {Glasgow mathematical journal},
     pages = {37--43},
     year = {1994},
     volume = {36},
     number = {1},
     doi = {10.1017/S0017089500030524},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500030524/}
}