@article{https://resolver.caltech.edu/CaltechAUTHORS:NEHrsi56,
    title = "Modification to the Automatic Ionization Chamber",
    journal = "Review of Scientific Instruments",
    year = "1956",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:NEHrsi56",
    id = "record",
    issn = "0034-6748",
    doi = "10.1063/1.1715511",
    volume = "27"
}


@article{https://resolver.caltech.edu/CaltechAUTHORS:NEHrsi54,
    title = "Techniques Useful in Evacuating and Pressurizing Metal Chambers",
    journal = "Review of Scientific Instruments",
    year = "1954",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:NEHrsi54",
    id = "record",
    issn = "0034-6748",
    doi = "10.1063/1.1771116",
    volume = "25"
}