S. Khoroshkin, O. Ogievetsky, “Mickelsson algebras and Zhelobenko operators”, Journal of Algebra, 319:5 (2008), 2113
A.I. Molev, Handbook of Algebra, 4, 2006, 109
Charles H. Conley, Mark R. Sepanski, “Infinite commutative product formulas for relative extremal projectors”, Advances in Mathematics, 196:1 (2005), 52
S. M. Khoroshkin, “Extremal Projector and Dynamical Twist”, Theoret. and Math. Phys., 139:1 (2004), 582–597
Charles H. Conley, Mark R. Sepanski, “Relative extremal projectors”, Advances in Mathematics, 174:2 (2003), 155
D. P. Zhelobenko, “Universal Verma modules and $W$-resolvents over Kač–Moody algebras”, Theoret. and Math. Phys., 122:3 (2000), 278–297
D. V. Yur'ev, “Topics in isotopic pairs and their representations. II. A general supercase”, Theoret. and Math. Phys., 111:1 (1997), 511–518
V. N. Tolstoy, S. M. Khoroshkin, “The universal $R$-matrix for quantum untwisted affine Lie algebras”, Funct. Anal. Appl., 26:1 (1992), 69–71
V. N. Tolstoy, “Extremal projections for contragredient Lie algebras and superalgebras of finite growth”, Russian Math. Surveys, 44:1 (1989), 257–258
D. P. Zhelobenko, “Extremal projectors and generalized Mickelsson algebras over reductive Lie algebras”, Math. USSR-Izv., 33:1 (1989), 85–100
Pekka Kekäläinen, “On irreducible A2-finite G2-modules”, Journal of Algebra, 117:1 (1988), 72
D. P. Zhelobenko, “Extremal cocycles of Weyl groups”, Funct. Anal. Appl., 21:3 (1987), 183–192
V. N. Tolstoy, “Extremal projections for reductive classical Lie superalgebras with a non-degenerate generalized Killing form”, Russian Math. Surveys, 40:4 (1985), 241–242