@article{CMUC_1999__40_4_a3,
     author = {Wang, Shuanhong and Wang, Dingguo},
     title = {Hopf algebra structure $H^{\sigma-R}$ with two sided invertible 2-cocycle},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {635--650},
     publisher = {mathdoc},
     volume = {40},
     number = {4},
     year = {1999},
     mrnumber = {1756542},
     zbl = {1014.16038},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1999__40_4_a3/}
}