@other{https://resolver.caltech.edu/CaltechETD:etd-03242004-145118,
    title = "An Electronic Digital Polynomial Root Extractor",
    year = "1956",
    url = "https://resolver.caltech.edu/CaltechETD:etd-03242004-145118",
    id = "record",
    doi = "10.7907/XSCJ-XT27"
}


@other{https://resolver.caltech.edu/CaltechTHESIS:02032021-150144083,
    title = "Factors Governing Accumulation of Oil and Gas in Stratigraphic Traps. Experimental Studies on the Characteristics of the Electrochemical Potentials Encountered in Drill Holes. Studies on Infiltration of Porous Formations by Drilling Fluids in Relation to the Quantitative Analysis of Electrologs in Drill Holes",
    year = "1950",
    url = "https://resolver.caltech.edu/CaltechTHESIS:02032021-150144083",
    id = "record",
    doi = "10.7907/trf9-g451"
}