@article{AIHPA_1999__71_4_459_0,
     author = {Nakayashiki, A. and Pakuliak, S. and Tarasov, V.},
     title = {On solutions of the {KZ} and {qKZ} equations at level zero},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {459--496},
     publisher = {Gauthier-Villars},
     volume = {71},
     number = {4},
     year = {1999},
     mrnumber = {1721551},
     zbl = {0941.35089},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPA_1999__71_4_459_0/}
}