Texture Classification Using Neural Networks and Local Granulometries. - Cristophe Gratin; Jordi Vitrià; Francesc Moreso; Daniel Serón (ISMM, 1994)

The flat zone approach: A general low-level region merging segmentation method. - José Crespo; Ronald W. Schafer; Jean Serra; Cristophe Gratin; Fernand Meyer (Signal Process., 1997)