Information entropy in solar atmospheric fields - I. Intensity photospheric structures G. Consolini, F. Berrilli, A. Florio, E. Pietropaolo and L. A. Smaldone A&A, 402 3 (2003) 1115-1127 Published online: 23 April 2003 DOI: 10.1051/0004-6361:20030175