@Book{OL25440799M,
    title: {Divergent},
    author: {Veronica Roth},
    publisher: {Katherine Tegen Books an imprint of HarperCollinsPublishers},
    year: {2011},
}

@Author{OL6895646A,
    name: {Veronica Roth},
    birth_date: {19. August 1988}
}