Bezrukavnikov, R <br/><br/>
Factorizable sheavens and quantum group 
R. Bezrukavnikov; M. Finkelberg; V. Schechtman 
 - Bonn  Max- Planck- Institut fur Mathematik  1997 
 - 285 p  fig  29 cm 
 - Preprint series 1997  111 .
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