@Book{OL25755973M,
    title: {Elon Musk},
    author: {Ashlee Vance and Francisco López Martín},
    publisher: {Ecco, an imprint of HarperCollinsPublishers},
    year: {2015},
    place: {New York, USA},
}

@Author{OL3513180A,
    name: {Ashlee Vance},
    birth_date: {1977}
}
@Author{OL9081559A,
    name: {Francisco López Martín},
}