Cellular neural networks and visual computing: Leon O. Chua, Tamás Roska, Cambridge University Press, Cambridge 2002, ISBN: 0-521-65247-2

An endless papermaker press felt having a plurality of modular textile structures which include a plurality of layers of fiber materials and a plurality of yarn assemblies in which the yarns in each assembly are located in substantially parallel relation with respect to one another, the layers of fiber materials and yarn assemblies not being bound together by any separate binding structure, the yarns located in at least one yarn assembly being disposed in nonparallel relation with respect to the yarns located in an adjacent yarn assembly, and each modular structure being further capable of having distinct chemical or physical treatments applied thereto.