@conference {cSayrol95, title = {Fourth-order statistics cost functions: applications to time delay estimation and image motion estimation}, booktitle = {VI SPANISH SYMPOSIUM ON PATTERN RECOGNITION AND IMAGE ANALYSIS}, year = {1995}, pages = {543{\textendash}548}, isbn = {978-1-4244-9564-1}, author = {Elisa Sayrol and Gasull, A. and R. Fonollosa, Javier} }