TY - EJOUR T1 - SCALA: Towards a physical calibration of CALSPEC standard stars based on a NIST-traceable reference for SNIFS AU - Küsters, Daniel AU - Lombardo, Simona AU - Kowalski, Marek Paul AU - Aldering, Greg AU - Boone, Kyle AU - Copin, Yannick AU - Nordin, Jakob AU - Rubin, David PY - 2018 LA - eng PB - Humboldt-Universität zu Berlin JO - Proceedings of the International Astronomical Union DO - http://dx.doi.org/10.18452/21705 ER -