@article{10_4153_CJM_1974_058_1,
     author = {Wilson, Jeremy},
     title = {On {Outer-Commutator} {Words}},
     journal = {Canadian journal of mathematics},
     pages = {608--620},
     year = {1974},
     volume = {26},
     number = {3},
     doi = {10.4153/CJM-1974-058-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-058-1/}
}