@article{10_4153_CJM_1969_011_8,
     author = {Lacroix, Norbert H. J.},
     title = {Two-Dimensional {Linear} {Groups} {Over} {Local} {Rings}},
     journal = {Canadian journal of mathematics},
     pages = {106--135},
     year = {1969},
     volume = {21},
     number = {1},
     doi = {10.4153/CJM-1969-011-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1969-011-8/}
}