TY - JOUR T1 - The l-loop banana amplitude from GKZ systems and relative Calabi-Yau periods JO - Journal of High Energy Physics UR - https://doi.org/10.1007/jhep04(2020)088 PY - 2020/04/15 AU - Klemm A AU - Nega C AU - Safari R ED - DO - DOI: 10.1007/jhep04(2020)088 PB - Springer Science and Business Media LLC VL - 2020 IS - 4 Y2 - 2026/06/03 ER -