@other{https://resolver.caltech.edu/CaltechETD:etd-02082008-161931,
    title = "Source contributions to the size and composition distribution of urban particulate air pollution",
    year = "1999",
    url = "https://resolver.caltech.edu/CaltechETD:etd-02082008-161931",
    id = "record",
    doi = "10.7907/tthv-kf87"
}