@article{10_4153_CMB_1976_039_9,
     author = {Campbell, C. M. and Robertson, E. F.},
     title = {On a {Group} {Presentation} {Due} to {Fox}},
     journal = {Canadian mathematical bulletin},
     pages = {247--248},
     year = {1976},
     volume = {19},
     number = {2},
     doi = {10.4153/CMB-1976-039-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1976-039-9/}
}