A Comparison Between the Standard Hough Transform and the Mahalanobis Distance Hough Transform. - Chengping Xu; Sergio A. Velastin (ECCV (1), 1994)

The Mahalanobis Distance Hough Transform with Extended Kalman Filter Refinement. - Chengping Xu; Sergio A. Velastin (ISCAS, 1994)

Image Feature Extraction Using a Method Derived from the Hough Transform with Extended Kalman Filtering. - Sergio A. Velastin; Chengping Xu (PSIVT, 2007)