H. Molina Abril, P. Real:
"Homological Computation Using Spanning Trees";
Talk: 14th Iberoamerican Conference on Pattern Recognition, CIARP 2009, Guadalajara, Jalisco, Mexico; 2009-11-15 - 2009-11-18; in: "Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications", Springer, LNCS 5856 (2009), ISBN: 978-3-642-10267-7; 272 - 278.