@article{10_1090_S0894_0347_1990_1035415_6,
     author = {Lusztig, G.},
     title = {Canonical bases arising from quantized enveloping algebras},
     journal = {Journal of the American Mathematical Society},
     pages = {447--498},
     publisher = {mathdoc},
     volume = {03},
     number = {2},
     year = {1990},
     doi = {10.1090/S0894-0347-1990-1035415-6},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1990-1035415-6/}
}