Rapid apsidal motion in eccentric eclipsing binaries: OX Cassiopeia, PV Cassiopeia, and CO LacertaeP. Švaříček, M. Wolf, A. Claret, L. Kotková, L. Brát, L. Šmelcer and M. ZejdaA&A, 477 2 (2008) 615-620DOI: https://doi.org/10.1051/0004-6361:20078022