TY - JOUR AU - V. A. Malyshev TI - Wiener–Hopf equations in a quadrant of the plane, discrete groups, and automorphic functions JO - Sbornik. Mathematics PY - 1971 SP - 491 EP - 516 VL - 13 IS - 4 UR - http://geodesic.mathdoc.fr/item/SM_1971_13_4_a0/ LA - en ID - SM_1971_13_4_a0 ER -