XMM-Newton observations of EF Eridani: the textbook example of low-accretion rate polars A. D. Schwope, A. Staude, D. Koester and J. Vogel A&A, 469 3 (2007) 1027-1031 Published online: 29 March 2007 DOI: 10.1051/0004-6361:20066928