High-speed photometry of the pre-cataclysmic binary HW Virginis and its orbital period changeC. İbanoǧlu, Ö. Çakırlı, G. Taş and S. EvrenA&A, 414 3 (2004) 1043-1048DOI: https://doi.org/10.1051/0004-6361:20034013
