http://www.cs.toronto.edu/~hinton/papers.html
One of his earlier articles written in 1986!Learning internal representations by error propagation. http://www.cs.toronto.edu/~hinton/absps/pdp8.pdf
Another one of his earlier articles, very interesting and written in 1992. How neural networks learn from experience. http://www.cs.toronto.edu/~hinton/absps/sciam92.pdf