2434 20160701171705.0 10.1007/978-94-011-2472-0_25 DOI ASTROimport-591 Liu, Z. 1992 Calibration of Large Batches of Photographic Images Sterken, C. Hensberge, H. de Cuyper, J. P. Digitised Optical Sky Surveys 174 1992 193 http://esoads.eso.org/abs/1992ASSL..174..193L published in NONREF