@inbook{https://resolver.caltech.edu/CaltechAUTHORS:20170301-101543100,
    title = "Active Galactic Nuclei",
    chapter = "Spectral Energy Distributions of PG Quasars",
    year = "1989",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20170301-101543100",
    id = "record",
    isbn = "0-7923-0256-7"
}


@article{https://resolver.caltech.edu/CaltechAUTHORS:20170301-135107857,
    title = "Continuum energy distributions of quasars in the Palomar-Green Survey",
    journal = "Astrophysical Journal Supplement Series",
    year = "1987",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20170301-135107857",
    id = "record",
    issn = "0067-0049",
    doi = "10.1086/191175",
    volume = "63"
}