Relativistic apsidal motion in eccentric eclipsing binaries M. Wolf, A. Claret, L. Kotková, H. Kučáková, R. Kocián, L. Brát, P. Svoboda and L. Šmelcer A&A, 509 (2010) A18 Published online: 12 January 2010 DOI: 10.1051/0004-6361/200911671