@article{JRAM_1991__417_153325,
     author = {Vyjayanthi Chari and Andrew Pressley},
     title = {Fundamental representations of {Yangians} and singularities of {R-matrices.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {87--128},
     publisher = {mathdoc},
     volume = {417},
     year = {1991},
     zbl = {0726.17014},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1991__417_153325/}
}