@article{FAA_1991_25_4_a11,
     author = {S. M. Natanzon},
     title = {Discrete subgroups of $GL(2,C)$ and spinor bundles on {Riemann} and {Klein} surfaces},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {76--78},
     publisher = {mathdoc},
     volume = {25},
     number = {4},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1991_25_4_a11/}
}