1. Generalizing the Hough transform to detect arbitrary shapes;Ballard;Pattern Recognition,1981
2. Thinning algorithms: A critique and a new methodology;Davies;Pattern Recognition,1981
3. Adding a conscience to competitive learning;Desieno;Proc. IEEE Internat. Conf. on Neural Networks I,1988
4. Recognizing handwritten digits using mixtures of linear models;Hinton;Adv. Neural Inform. Process. System,1995
5. Hough, P., 1962. Method and means for recognizing complex patterns. US Patent 3069654, 18 December 1962