@other{https://resolver.caltech.edu/CaltechTHESIS:04132012-091556662,
    title = "Structure, placement and modelling",
    year = "1981",
    url = "https://resolver.caltech.edu/CaltechTHESIS:04132012-091556662",
    id = "record",
    doi = "10.7907/tb24-mg70"
}