Pim Tuyls Geert Jan Schrijen Boris Skoric Jan van Geloven Nynke Verhaegh Rob Wolters Read-Proof Hardware from Protective Coatings. 369-383 2006 conf/ches/2006 CHES http://dx.doi.org/10.1007/11894063_29 db/conf/ches/ches2006.html#TuylsSSGVW06