1. P. V. C. Hough, “Method and Means for Recognizing Complex Patterns,” U.S. Patent 3069654.
2. Generalizing the Hough transform to detect arbitrary shapes;Ballard;Pattern Recognit.,1981
3. Finding circles by an array of accumulators;Kimme;Commun. Assoc. Comput. Mach.,1975
4. Use of the Hough transform to detect lines and curves in pictures;Duda;Commun. Assoc. Comput. Mach.,1975
5. Inherent bias and noise in the Hough transform;Brown;IEEE Trans. Pattern Anal. Mach. Intell.,1983