@other{https://resolver.caltech.edu/CaltechTHESIS:04112011-105901546,
    title = "Two topics in 2D quantum field theory",
    year = "1991",
    url = "https://resolver.caltech.edu/CaltechTHESIS:04112011-105901546",
    id = "record",
    doi = "10.7907/w269-sg43"
}