@other{https://resolver.caltech.edu/CaltechETD:etd-04072003-091659,
    title = "An Experimental and Theoretical Investigation of Two-Dimensional Centrifugal Pump Impellers",
    url = "https://resolver.caltech.edu/CaltechETD:etd-04072003-091659",
    id = "record",
    doi = "10.7907/159P-SA35"
}


@other{https://resolver.caltech.edu/CaltechETD:etd-12102008-131330,
    title = "Supersonic Flow Through Cascades, with Application to Diffusers",
    url = "https://resolver.caltech.edu/CaltechETD:etd-12102008-131330",
    id = "record",
    doi = "10.7907/FJEG-RM29"
}