@article{10_1090_S0894_0347_1990_1013053_9,
     author = {Lusztig, George},
     title = {Finite-dimensional {Hopf} algebras arising from quantized universal enveloping algebra},
     journal = {Journal of the American Mathematical Society},
     pages = {257--296},
     year = {1990},
     volume = {03},
     number = {1},
     doi = {10.1090/S0894-0347-1990-1013053-9},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1990-1013053-9/}
}