by Dexter, D.W., Verazin, G.T., McKellar, D.P.
Published in Gastrointestinal endoscopy (01.04.1995)

by Dominguez, C.O., Flach, J.M., McKellar, D.P., Dunn, M.
Published in Proceedings Third Annual Symposium on Human Interaction with Complex Systems. HICS'96 (1996)