1. G. Cottrell, P. Munro, D. Zipser. Image compression by backpropagation: An example of extensional programming. In N.E. Sharkey (Ed). Advances in Cognitive science (Vol. 3). Norwood, NJ: Ablex.
2. H. Bourlard, Y. Kamp. Autoassociation by multilayer perceptrons and singular values decomposition. Manuscript 217. Philips research laboratory. Brussels. November 87.
3. Baldi, P., Hornik, K.: Neutral Network and principal component analysis. Learning from examples without local minima, preprint (1988).