BlazhkoL. M., ZhadanT. O. and SerovN. I. (2006) “Classification of linear representations of the Galilei, Poincaré, and conformal algebras in the case of a two-dimensional vector field and their applications”, Ukrains’kyi Matematychnyi Zhurnal, 58(8), pp. 1128–1145. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3518 (Accessed: 27July2024).