1. Model based computer vision;Brooks,1981
2. A survey of the Hough transform;Illingworth;Computer Vision, Graphics & Image Process,1988
3. Extracting elliptical figures from an edge vector field;Tsukune,1983
4. Detection of ellipses by a modified Hough transformation;Tsuji;IEEE Trans. Comput.,1978
5. The analytical geometry of the conic sections;Askwith,1925