@article{10_4153_CMB_1974_015_6,
     author = {Rankin, S. A.},
     title = {Orbital {Lattices} of {SL+} (2, {Z)}},
     journal = {Canadian mathematical bulletin},
     pages = {87--90},
     year = {1974},
     volume = {17},
     number = {1},
     doi = {10.4153/CMB-1974-015-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-015-6/}
}