@other{https://thesis.library.caltech.edu/id/eprint/4095,
    author = "Horgen, Henri M.",
    title = "Analysis of object-image relationships in electron microscopy by image processing techniques",
    year = "1975",
    url = "https://resolver.caltech.edu/CaltechETD:etd-10152002-154431",
    id = "https://thesis.library.caltech.edu/id/eprint/4095",
    doi = "10.7907/46Q4-TE10"
}