@Book{OL2040042M,
    title: {The pyramids},
    author: {Joseph Davidovits and Margie Morris},
    publisher: {Hippocrene Books},
    year: {1988},
    place: {New York},
}

@Author{OL949787A,
    name: {Joseph Davidovits},
}
@Author{OL719920A,
    name: {Margie Morris},
    birth_date: {1952}
}