Two-dimensional image boundary estimation by use of likelihood maximization and Kalman filtering. - Fernand S. Cohen; David B. Cooper; Howard Elliott; Peter F. Symosek (ICASSP, 1980)

Implementation, Interpretation, and Analysis of a Suboptimal Boundary Finding Algorithm. - Howard Elliott; David B. Cooper; Fernand S. Cohen; Peter F. Symosek (IEEE Trans. Pattern Anal. Mach. Intell., 1982)