Tompkin, W.R.Staub, R.Weiteneder, C.Schilling, A.Herzig, H. P.2009-04-222009-04-222009-04-222000https://infoscience.epfl.ch/handle/20.500.14299/37814High-frequency gratings with locally varying profile depth for visual security applicationstext::conference output::conference proceedings::conference paper