TY - JOUR AU - S. M. Natanzon TI - Discrete subgroups of $GL(2,C)$ and spinor bundles on Riemann and Klein surfaces JO - Funkcionalʹnyj analiz i ego priloženiâ PY - 1991 SP - 76 EP - 78 VL - 25 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FAA_1991_25_4_a11/ LA - ru ID - FAA_1991_25_4_a11 ER -