J. L. Balcázar;J. Díaz;J. Gabarró
Facultat d'Informa`tica de Barcelona, Barcelona, Spain;Facultat d'Informa`tica de Barcelona, Barcelona, Spain;Facultat d'Informa`tica de Narcelona, Barcelona, Spain
Computational complexity of neural networks: a survey
Nordic Journal of Computing
The computational power of discrete hopfield nets with hidden units
Neural Computation