COSMOGRAIL: The COSmological MOnitoring of GRAvItational Lenses - I. How to sample the light curves of gravitationally lensed quasars to measure accurate time delaysA. Eigenbrod, F. Courbin, C. Vuissoz, G. Meylan, P. Saha and S. DyeA&A, 436 1 (2005) 25-35DOI: https://doi.org/10.1051/0004-6361:20042422
