@BOOK{NAP1760, author = "National Academy of Engineering and National Academy of Engineering", title = "Memorial Tributes: Volume 4", isbn = "978-0-309-04349-6", doi = "10.17226/1760", url = "https://nap.nationalacademies.org/catalog/1760/memorial-tributes-volume-4", year = 1991, publisher = "The National Academies Press", address = "Washington, DC" }