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C. Mosquera y Pérez-González, F., «On the strengthened robust SPR problem for discrete-time systems», in American Control Conference, 1998.
J. R. Hernández y Pérez-González, F., «Throwing More Light on Image Watermarks», in International Workshop on Information Hiding (IH), Portland, Oregon, USA, 1998, vol. 1525, pp. 191–207.
Conference Paper
J. R. Hernández, Pérez-González, F., y Rodríguez, J. M., «Data Hiding for Copyright Protection of Still Images», in Emerging Techniques for Communication Terminals, Tolouse, France, 1997, pp. 285–289.