@other{https://resolver.caltech.edu/CaltechETD:etd-03092009-160704,
    title = "The determination of small time differences in the formation of planetary objects",
    url = "https://resolver.caltech.edu/CaltechETD:etd-03092009-160704",
    id = "record",
    doi = "10.7907/D5S4-JN64"
}