Eclipse observations of high-frequency oscillations in active region coronal loops A. C. Katsiyannis, D. R. Williams, R. T. J. Mc Ateer, P. T. Gallagher, F. P. Keenan and F. Murtagh A&A, 406 2 (2003) 709-714 Published online: 17 November 2003 DOI: 10.1051/0004-6361:20030458