The exotic eclipsing nucleus of the ring planetary nebula SuWt 2K. Exter, H.E. Bond, K.G. Stassun, B. Smalley, P.F.L. Maxted and D.L. PollaccoEAS Publications Series, 64 (2013) 361-362DOI: https://doi.org/10.1051/eas/1364050
