@other{https://resolver.caltech.edu/CaltechETD:etd-09172008-091944,
    title = "CCD Observations of Clusters of Galaxies",
    year = "1982",
    url = "https://resolver.caltech.edu/CaltechETD:etd-09172008-091944",
    id = "record",
    doi = "10.7907/tsbt-dz83"
}