@article{10_4153_CJM_1976_130_0,
     author = {Cummings, L. J. and Robinson, R. W.},
     title = {Linear {Symmetry} {Classes}},
     journal = {Canadian journal of mathematics},
     pages = {1311--1319},
     year = {1976},
     volume = {28},
     number = {6},
     doi = {10.4153/CJM-1976-130-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1976-130-0/}
}