@other{https://resolver.caltech.edu/CaltechAUTHORS:20131204-125025160,
    title = "Topics in Theoretical Physics: Lecture Notes from Ph. 234",
    year = "1959",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20131204-125025160",
    id = "record"
}