@inbook{https://resolver.caltech.edu/CaltechAUTHORS:20200609-153340834,
    title = "The Universe of General Relativity",
    chapter = {Hilbert's "World Equations" and His Vision of a Unified Science},
    year = "2005",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20200609-153340834",
    id = "record",
    isbn = "978-0-8176-4380-5",
    doi = "10.1007/0-8176-4454-7\_14"
}