@BOOK{NAP1360, author = "National Research Council", title = "Discriminant Analysis and Clustering", isbn = "978-0-309-09038-4", doi = "10.17226/1360", url = "https://nap.nationalacademies.org/catalog/1360/discriminant-analysis-and-clustering", year = 1988, publisher = "The National Academies Press", address = "Washington, DC" }