Calibration of δ17O and 17Oexcess values of three international standards: IAEA‐603, NBS19 and NBS18. (13th March 2019) - Barkan, Eugeni; Affek, Hagit P.; Luz, Boaz; Bergel, Shelly J.; Voarintsoa, Ny Riavo G.; Musan, Israela