Some aspects of electrical conduction in granular systems of various dimensions M. Creyssels, S. Dorbolo, A. Merlen, C. Laroche, B. Castaing and E. Falcon Eur. Phys. J. E, 23 3 (2007) 255-264 Published online: 05 July 2007 DOI: 10.1140/epje/i2006-10186-9