Segmentation Processes in the VISIONS System. - J. Prager; Paul A. Nagin; Ralf R. Kohler; Allen R. Hanson; Edward M. Riseman (IJCAI, 1977)

Studies in Global and Local Histogram-Guided Relaxation Algorithms. - Paul A. Nagin; Allen R. Hanson; Edward M. Riseman (IEEE Trans. Pattern Anal. Mach. Intell., 1982)

Authors'Reply. - Allen R. Hanson; Edward M. Riseman; Paul A. Nagin (IEEE Trans. Pattern Anal. Mach. Intell., 1984)