[1]
ZhdanovR.Z. and LagnoV.I. 2000. On new realizations of the poincare groups <em class="a-plus-plus">P</em> (1,2) and <em class="a-plus-plus">P</em&gt;(2, 2). Ukrains’kyi Matematychnyi Zhurnal. 52, 4 (Apr. 2000), 447-462.