Measurement and correction of two-sided freeform optical elements with combined tactile-optical metrology equipmentJohannes Hartung, Henrik von Lukowicz, Mathias Rohde, Knut Kleinbauer, Nils Heidler and Stefan RisseEPJ Web Conf., 215 (2019) 08002DOI: https://doi.org/10.1051/epjconf/201921508002