@conference {tardon1999markov,
	title = {Markov random fields and the disparity gradient constraint applied to stereo correspondence},
	booktitle = {Image Processing, 1999. ICIP 99. Proceedings. 1999 International Conference on},
	volume = {3},
	year = {1999},
	pages = {901{\textendash}905},
	publisher = {IEEE},
	organization = {IEEE},
	author = {Lorenzo J Tard{\'o}n-Garc{\'\i}a and Javier Portillo-Garcia and Carlos Alberola-Lopez}
}
