Circular polarization survey of intermediate polars I. Northern targets in the range 17 h < RA < 23 hO. W. Butters, S. Katajainen, A. J. Norton, H. J. Lehto and V. PiirolaA&A, 496 3 (2009) 891-902DOI: https://doi.org/10.1051/0004-6361/200811058
