@article{10_4153_CJM_1978_093_2,
     author = {Maxwell, George},
     title = {The {Space} {Groups} of {Two} {Dimensional} {Minkowski} {Space}},
     journal = {Canadian journal of mathematics},
     pages = {1103--1120},
     year = {1978},
     volume = {30},
     number = {5},
     doi = {10.4153/CJM-1978-093-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1978-093-2/}
}