@article{JMAG_2007_3_2_a1,
     author = {O. Bershtein and A. Stolin and L. Vaksman},
     title = {Spherical principal series of quantum {Harish-Chandra} modules},
     journal = {\v{Z}urnal matemati\v{c}eskoj fiziki, analiza, geometrii},
     pages = {157--175},
     year = {2007},
     volume = {3},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JMAG_2007_3_2_a1/}
}