Polars in the ROSAT Era I: Overview Beuermann, K. ; Burwitz, V. ; Reinsch, K. ; Schwope, A. D. ; Thomas, H. -C. Abstract Publication: Cataclysmic Variables Pub Date: 1995 DOI: 10.1007/978-94-011-0335-0_112 Bibcode: 1995ASSL..205..381B