Experimental studies of complex crater formation under cluster implantation of solids S. Prasalovich, V. Popok, P. Persson and E. E.B. Campbell Eur. Phys. J. D, 36 1 (2005) 79-88 Published online: 26 July 2005 DOI: 10.1140/epjd/e2005-00197-2