@article{10_4153_CMB_1985_064_0,
     author = {Lawrence, John},
     title = {The {Definability} of the {Commutator} {Subgroup} in a {Variety} {Generated} by a {Finite} {Group}},
     journal = {Canadian mathematical bulletin},
     pages = {505--507},
     year = {1985},
     volume = {28},
     number = {4},
     doi = {10.4153/CMB-1985-064-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1985-064-0/}
}