@other{https://resolver.caltech.edu/CaltechAUTHORS:20170831-142012841,
    title = "The Divergence Between Willingness-To-Pay and Willingness-To-Accept Measures of Value",
    year = "1990",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20170831-142012841",
    id = "record",
    doi = "10.7907/54gj7-f0788"
}


@other{https://resolver.caltech.edu/CaltechAUTHORS:20171027-163843844,
    title = "Population Pressure and Fertility Changes in Costa Rica, 1906-1970",
    year = "1976",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20171027-163843844",
    id = "record",
    doi = "10.7907/e63r6-n9j18"
}


@other{https://resolver.caltech.edu/CaltechAUTHORS:20171030-153520365,
    title = "The Sources of the Italian Mortality Decline, 1887-1955",
    year = "1975",
    url = "https://resolver.caltech.edu/CaltechAUTHORS:20171030-153520365",
    id = "record",
    doi = "10.7907/7kvtc-z9567"
}