@Book{OL1882030M,
    title: {Elementary linear algebra},
    author: {Howard Anton and Chris Rorres},
    publisher: {Wiley},
    year: {1991},
    place: {New York},
}

@Work{OL485862W,
    title: {Elementary linear algebra},
    author: {Howard Anton and Chris Rorres},
    first_publish_year: {1973}
}

@Author{OL30353A,
    name: {Howard Anton},
}
@Author{OL1284478A,
    name: {Chris Rorres},
}