Media type: E-Article Title: SL (2, ) invariance in string theory Contributor: Odintsov, Sergei D. Published: Elsevier BV, 1990 Published in: Physics Letters B, 252 (1990) 4, Seite 573-576 Language: English DOI: 10.1016/0370-2693(90)90486-p ISSN: 0370-2693 Keywords: Nuclear and High Energy Physics Origination: Footnote: