@article{10_4153_CMB_2015_066_4,
     author = {Jensen, Gerd and Pommerenke, Christian},
     title = {Discrete {Space-time} and {Lorentz} {Transformations}},
     journal = {Canadian mathematical bulletin},
     pages = {123--135},
     year = {2016},
     volume = {59},
     number = {1},
     doi = {10.4153/CMB-2015-066-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2015-066-4/}
}