TY - JOUR AU - Yi Ouyang AU - Shenxing Zhang TI - On second 2-descent and non-congruent numbers JO - Acta Arithmetica PY - 2015 SP - 343 EP - 360 VL - 170 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/aa170-4-3/ DO - 10.4064/aa170-4-3 LA - en ID - 10_4064_aa170_4_3 ER -