2513 20160701171706.0 ASTROimport-670 Ilijic, S. 2004 Obtaining normalised component spectra with FDBinary We discuss the problem of the normalisation of stellar spectra obtained through spectral disentangling of a time series of spectra of a double-lined spectroscopic binary and describe our disentangling code FDBinary. We consider in detail the case of component stars with a time-independent flux ratio. The component spectra are then uniquely determined only up to a constant term. Additionally, due to deviations between the data and the model assumptions, the component spectra may be distorted and present undulations in the continua. Hensberge, H. Pavlovski, K. Freyhammer, L. M. Spectroscopically and Spatially Resolving the Components of the Close Binary Stars 318 2004 111-113 http://esoads.eso.org/abs/2004ASPC..318..111I published in NONREF