@article{TMF_1993_95_2_a18,
     author = {J. Schnittger and U. Ellwanger},
     title = {Nonperturbative conditions for local {Weyl} invariance on a~curved world sheet},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {361--384},
     year = {1993},
     volume = {95},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TMF_1993_95_2_a18/}
}