TY - JOUR AU - Ping Xu TI - The evaluation of two-dimensional lattice sums via Ramanujan's theta functions JO - Acta Arithmetica PY - 2014 SP - 57 EP - 89 VL - 165 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/aa165-1-4/ DO - 10.4064/aa165-1-4 LA - en ID - 10_4064_aa165_1_4 ER -