@article{https://resolver.caltech.edu/CaltechAUTHORS:BARpr64a,
    title = "Electronic shielding by closed shells in salts of thulium",
    journal = "Physical Review",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:BARpr64a",
    id = "record",
    issn = "0031-899X",
    doi = "10.1103/PhysRev.136.A175",
    volume = "136"
}


@article{https://resolver.caltech.edu/CaltechAUTHORS:BARprl63,
    title = "Electronic shielding of the crystalline field in thulium ethyl sulfate",
    journal = "Physical Review Letters",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:BARprl63",
    id = "record",
    issn = "0031-9007",
    doi = "10.1103/PhysRevLett.11.253",
    volume = "11"
}