QUASI-CLASSICAL SOLUTIONS OF INVERSE PROBLEM OF VARIATIONAL CALCULUS Статья FILIPPOV V.M. Doklady Akademii nauk SSSR. Mezhdunarodnaya Kniga, Moscow, Russian Federation. Том 285. 1985. С. 53-56
S-ALGEBRAS AND HARISH-CHANDRA MODULES ON REDUCTIVE LIE-ALGEBRAS Статья ZHELOBENKO D.P. Doklady Akademii nauk SSSR. Mezhdunarodnaya Kniga, Moscow, Russian Federation. Том 283. 1985. С. 1306-1308