TY - JOUR T1 - Period ratios of modular forms JO - Mathematische Annalen PY - 2000/11/01 AU - Dummigan N ED - DO - DOI: 10.1007/s002080000135 PB - Springer Science and Business Media LLC VL - 318 IS - 3 SP - 621 EP - 636 Y2 - 2024/12/22 ER -