@other{https://resolver.caltech.edu/CaltechETD:etd-04292008-114242,
    title = "An Analysis of the Variable Star, W Virginis",
    year = "1952",
    url = "https://resolver.caltech.edu/CaltechETD:etd-04292008-114242",
    id = "record",
    doi = "10.7907/R3P7-KJ13"
}