A Variation on a Nonparametric Clustering Method. - Bruce Johnston; Thomas A. Bailey Jr.; Richard C. Dubes (IEEE Trans. Pattern Anal. Mach. Intell., 1979)

The Challenge of Negation in Health Care Searches and Queries. - Valerie J. Harvey; Constance M. Ruzich; Jeanne M. Baugh; Bruce Johnston; Arthur J. Grant (AMIA, 2003)