Denoising spectroscopic data by means of the improved least-squares deconvolution method A. Tkachenko, T. Van Reeth, V. Tsymbal, C. Aerts, O. Kochukhov and J. Debosscher A&A, 560 (2013) A37 Published online: 03 December 2013 DOI: 10.1051/0004-6361/201322532