Urbonas, Algimantas Pranas, and Virginijus Marcinkevičius. “Certaines Propriétés Des Groupes Des Mouvements Des Espaces L4”. Lietuvos matematikos rinkinys 42, no. spec. (December 20, 2002): 113–118. Accessed September 25, 2026. https://www.journals.vu.lt/LMR/article/view/32837.