Kamencay, P., M. Zachariasova, R. Hudec, M. Benco, J. Hlubik, and S. Matuska. “Image Segmentation and Feature Extraction Using Sift-Sad Algorithm for Disparity Map Generation”. Communications - Scientific Letters of the University of Zilina, Vol. 15, no. 2A, July 2013, pp. 185-90, http://journals.uniza.sk/index.php/communications/article/view/678.