TY - JOUR AU - Frans Keune TI - (t2 - t)-Reciprocities on the Affine Line and Matsumoto's Theorem. JO - Inventiones mathematicae PY - 1975 SP - 185 EP - 192 VL - 28 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM_1975__28_142320/ ID - IM_1975__28_142320 ER -