2458 20160701171705.0 10.1007/978-94-015-9723-4_38 DOI ASTROimport-615 Strigachev, A. 2001 Multi-Colour CCD Photometry of Intermediate Visual Double Stars Lampens, P. Duval, D. The Influence of Binaries on Stellar Population Studies 264 2001 559 http://esoads.eso.org/abs/2001ASSL..264..559S published in NONREF