LagnoV. I. and FushchichV. I. (1998) “Linear and nonlinear representations of Galilei groups in two-dimensional space-time”, Ukrains’kyi Matematychnyi Zhurnal, 50(3), pp. 414-423. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4941 (Accessed: 24November2024).