HS0139+0559, HS0229+8016, HS0506+7725 and HS0642+5049: Four new long-period cataclysmic varia

HS0139+0559, HS0229+8016, HS0506+7725 and HS0642+5049: Four new long-period cataclysmic variables

A. Aungwerojwit, B.T. Gänsicke, P. Rodríguez-Gil, H.J. Hagen, E.T. Harlaftis, C. Papadimitriou, H. Lehto, S. Araujo-Betancor, U. Heber, R.E. Fried,

A&A 443,995