@other{https://resolver.caltech.edu/CaltechTHESIS:05232013-113856514,
    title = "Essays on Cooperation and Reciprocity",
    year = "2013",
    url = "https://resolver.caltech.edu/CaltechTHESIS:05232013-113856514",
    id = "record",
    doi = "10.7907/G536-ZW17"
}