On the potassium-rotation connection in late-type Alpha Persei stars E. L. Martín, A. Magazzù, R. J. García López, S. Randich and D. Barrado y Navascués A&A, 429 3 (2005) 1051-1055 Published online: 05 January 2005 DOI: 10.1051/0004-6361:20041629