A new data analysis technique in the study of mutual event lightcurves M. E. Ramírez, Y. Jiménez, M. J. González, M. Berrocoso and M. Sánchez-Francisco A&A, 448 3 (2006) 1197-1206 Published online: 03 March 2006 DOI: 10.1051/0004-6361:20041438