@article{701544,
     title = {The double covering of the quantum group $SO\_q (3)$
               },
     booktitle = {Proceedings of the Winter School "Geometry and Physics"},
     series = {GDML\_Books},
     publisher = {Circolo Matematico di Palermo},
     address = {Palermo},
     year = {1994},
     pages = {[47]-57},
     mrnumber = {MR1344000},
     zbl = {0833.17019},
     url = {http://dml.mathdoc.fr/item/701544}
}

Dijkhuizen, Mathijs S. The double covering of the quantum group $SO_q (3)$
               , dans Proceedings of the Winter School "Geometry and Physics", GDML_Books,  (1994), pp. [47]-57. http://gdmltest.u-ga.fr/item/701544/