@inbook{https://resolver.caltech.edu/CaltechAUTHORS:20101014-090414788,
    title = "General relativity : an Einstein centenary survey",
    chapter = "The initial value problem and the dynamical formulation of general relativity",
    year = "1979",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20101014-090414788",
    id = "record",
    isbn = "9780521299282"
}