TY - JOUR AU - Winfried Kohnen AU - Jyoti Sengupta TI - The first negative Hecke eigenvalue of a Siegel cusp form of genus two JO - Acta Arithmetica PY - 2007 SP - 53 EP - 62 VL - 129 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/aa129-1-4/ DO - 10.4064/aa129-1-4 LA - en ID - 10_4064_aa129_1_4 ER -