@other{https://resolver.caltech.edu/CaltechTHESIS:03082012-091130735,
    title = "Magnetostratigraphic investigations of the lower paleozoic system boundaries, and associated paleogeographic implications",
    year = "1990",
    url = "https://resolver.caltech.edu/CaltechTHESIS:03082012-091130735",
    id = "record",
    doi = "10.7907/hvxy-nh76"
}