Formation of nonlinear holographic images in a system of periodically located nonlinear mediums S.A. Belkov, S.G. Garanin, I.V. Epatko, R.V. Serov and I.N. Voronich EPJ Web of Conferences, 59 (2013) 08009 Published online: 15 November 2013 DOI: 10.1051/epjconf/20135908009