@BOOK{NAP4990, author = "National Academy of Sciences", title = "Biographical Memoirs: Volume 68", isbn = "978-0-309-05239-9", doi = "10.17226/4990", abstract = "Biographic Memoirs: Volume 68 contains the biographies of deceased members of the National Academy of Sciences and bibliographies of their published works. Each biographical essay was written by a member of the Academy familiar with the professional career of the deceased. For historical and bibliographical purposes, these volumes are worth returning to time and again.", url = "https://nap.nationalacademies.org/catalog/4990/biographical-memoirs-volume-68", year = 1995, publisher = "The National Academies Press", address = "Washington, DC" }