Orbital period changes of the nova-like cataclysmic variable AC Cancri: evidence of magnetic braking and an unseen companionS.-B. Qian, Z.-B. Dai, J.-J. He, J. Z. Yuan, F. Y. Xiang and M. ZejdaA&A, 466 2 (2007) 589-594DOI: https://doi.org/10.1051/0004-6361:20065970
