@article{10_4153_CMB_1983_033_3,
     author = {Lacroix, N. H. J. and Levesque, C.},
     title = {Sur {Les} {Sous-Groupes} {Normaux} {De} {SL2} {Sur} {Un} {Anneau} {Local}},
     journal = {Canadian mathematical bulletin},
     pages = {209--219},
     year = {1983},
     volume = {26},
     number = {2},
     doi = {10.4153/CMB-1983-033-3},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1983-033-3/}
}