%0 Journal Article %A Woronowicz, S. L. %A Zakrzewski, S. %T Quantum deformations of the Lorentz group. The Hopf-algebra level %J Compositio Mathematica %D 1994 %P 211-243 %V 90 %N 2 %I Kluwer Academic Publishers %U http://www.numdam.org/item/CM_1994__90_2_211_0/ %G en %F CM_1994__90_2_211_0