The use of the grey level SAT to find the salient cavities in echocardiograms. - David R. Bailes (BMVC, 1990)

The Use of Symmetry Chords for Expressing Grey Level Constraints. - David R. Bailes; Christopher J. Taylor 001 (BMVC, 1992)

The Use of the Gray Level SAT to Find the Salient Cavities in Echocardiograms. - David R. Bailes (J. Vis. Commun. Image Represent., 1996)