RETRACTED: Frictional properties of single crystals HMX, RDX and PETN explosives

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).This article has been retracted at the request of the Editors and Authors.The work described in this article was carried out at the Cavendish Laboratory, University of Cambridge, Cambridge, UK, which is under the direction of Dr. M. M. Chaudhri of the Cavendish Laboratory. Due to a misunderstanding between the authors and Dr. Chaudhri this paper was published without his consent.