00637naa#a2200181#i#450# EN\\bibl\69667 20250103101721.5 1994-5655 20230921b2023####ek#y0engy0150####ca RU Spaces of constant curvatere, the Liouville equation and contractions of Lie algebras Journal article Syktyvkar FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences" 2023 7 с. Journal article local Квантовая теория. 530.145 Kostyakov I. V. Kuratov V. V. komisc.editorum.ru