Kuznetsova V. MODEL REPRESENTATIONS OF THE LIE ALGEBRA $[A_2, A_1] = iA_1$ OF LINEAR NON-SELFADJOINT OPERATORS. Ann. Sofia Univ. Fac. Math. and Inf. [Internet]. 2011 Dec. 12 [cited 2024 Dec. 23];100:93-112. Available from: https://stipendii.uni-sofia.bg/index.php/fmi/article/view/248