@article{SJIM_2010_13_4_a3,
     author = {V. A. Kyrov},
     title = {Functional equations in {pseudo-Euclidean} geometry},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {38--51},
     publisher = {mathdoc},
     volume = {13},
     number = {4},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2010_13_4_a3/}
}