1. [Ba 85] Yu. A. Bahturin, On the structure of the PI-envelope of a finite-dimensional Lie algebra, Soviet Math. (Iz. VUZ) 29 (1985) no. 11, 83-87.
2. De Gruyter Expositions in Mathematics;Bahturin, Yuri A.,1992
3. Actions of commutative Hopf algebras;Bergen, Jeffrey;Bull. London Math. Soc.,1986
4. A homomorphic image of a special Lie algebra;Billig, Yu. V.;Mat. Sb. (N.S.),1988
5. Sur les fonctions à variation bornée au sens de Tonelli;Kempisty, Stefan;Bull. S\'{e}m. Math. Univ. Wilno,1939