G. Benkart et al., QUANTIZED ENVELOPING-ALGEBRAS FOR BORCHERDS SUPERALGEBRAS, Transactions of the American Mathematical Society, 350(8), 1998, pp. 3297-3319
We construct quantum deformations of enveloping algebras of Borcherds
superalgebras, their Verma modules, and their irreducible highest weig
ht modules.