@other{https://resolver.caltech.edu/CaltechETD:etd-01182008-091551,
    title = "Material and thermal transport in vertical granular flows",
    url = "https://resolver.caltech.edu/CaltechETD:etd-01182008-091551",
    id = "record",
    doi = "10.7907/wze4-p323"
}