@Book{OL678765M,
    title: {Intimate matters},
    author: {John D'Emilio and Estelle B. Freedman},
    publisher: {University of Chicago Press},
    year: {1997},
    place: {Chicago},
}

@Author{OL227816A,
    name: {John D'Emilio},
}
@Author{OL456187A,
    name: {Estelle B. Freedman},
    birth_date: {1947}
}