The evolution of luminosity, colour, and the mass-to-luminosity ratio of Galactic open clusters - Comparison of discrete vs. continuous IMF modelsA. E. Piskunov, N. V. Kharchenko, E. Schilbach, S. Röser, R.-D. Scholz and H. ZinneckerA&A, 525 (2011) A122DOI: https://doi.org/10.1051/0004-6361/201015376
