Supersaturation and activity-rotation relation in PMS stars: the young cluster h Persei C. Argiroffi, M. Caramazza, G. Micela, S. Sciortino, E. Moraux, J. Bouvier and E. Flaccomio A&A, 589 (2016) A113 Published online: 21 April 2016 DOI: 10.1051/0004-6361/201526539