Acoustic and magnetic wave heating in stars - II. On the range of chromospheric activity D. Fawzy, P. Ulmschneider, K. Stępień, Z. E. Musielak and W. Rammacher A&A, 386 3 (2002) 983-993 Published online: 15 May 2002 DOI: 10.1051/0004-6361:20020265