An XMM-Newton-based X-ray survey of pre-main sequence stellar emission in the L1551 star-forming complexF. Favata, G. Giardino, G. Micela, S. Sciortino and F. DamianiA&A, 403 1 (2003) 187-203DOI: https://doi.org/10.1051/0004-6361:20030305