1. V. G. Drinfel'd, Hopf algebras and the quantum Yang-Baxter equation, Sov. Math. Dokl. 32, 254 (1985)
2. V. G. Drinfel'd Dokl. Akad. Nauk Ser. Fiz. 283, 1060 (1985).
3. V. G. Drinfel’d, Quantum groups, In Proc. Int. Cong. Math. Berkeley, 798 (1986).
4. M. Jimbo, A q -difference analog of $$U(g)$$ and the Yang-Baxter equation, Lett. Math. Phys. 10, 63 (1985).
5. P. P. Kulish and N. Yu. Reshetikhin, Quantum linear problem for the sine-Gordon equation and higher representations, Zap. Nauchn. Sem. Leningrad. Otdel. Mat. Inst. Steklov (LOMI) 101, 101-110 (1981)