Experimental and theoretical studies of interactions between Si7 clusters F.v. Gynz-Rekowski, W. Quester, R. Dietsche, D. C. Lim, N. Bertram, T. Fischer, G. Ganteför, M. Schach, P. Nielaba and Y. D. Kim Eur. Phys. J. D, 45 3 (2007) 409-413 Published online: 11 May 2007 DOI: 10.1140/epjd/e2007-00155-0