A search for periodic gravitational waves from three recycled pulsars using the AURIGA detector - An implementation of a modified version of the unified approach methodA. Mion, M. J. Benacquista, M. Kramer, P. P. C. Freire and A. PossentiA&A, 504 2 (2009) 673-679DOI: https://doi.org/10.1051/0004-6361/200911946