@article{10_4153_CMB_1987_036_7,
     author = {Wilson, George V.},
     title = {Mixed {Groups} of {Finite} {Nilstufe}},
     journal = {Canadian mathematical bulletin},
     pages = {255--256},
     year = {1987},
     volume = {30},
     number = {2},
     doi = {10.4153/CMB-1987-036-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1987-036-7/}
}