TY - JOUR AU - Harris, Michael TI - 𝐿-functions of 2×2 unitary groups and factorization of periods of Hilbert modular forms JO - Journal of the American Mathematical Society PY - 1993 SP - 637 EP - 719 VL - 06 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1993-1186960-7/ DO - 10.1090/S0894-0347-1993-1186960-7 ID - 10_1090_S0894_0347_1993_1186960_7 ER -