Nonlinear optical layer-by-layer films of a methacrylic copolymer - Ribeiro, Paulo Antonio; Raposo, Maria; Santos Júnior, David Sotero; Balogh, Débora Terezia; Giacometti, José Alberto; Oliveira Junior, Osvaldo Novais de (Symposium of the Electrical, Optical and Magnetic Properties of Organic Solidate Materials, 1999)