@Book{OL22723492M,
    title: {Mathematical foundations of programming},
    author: {Frank S. Beckman},
    publisher: {Addison-Wesley},
    year: {1981},
    place: {Reading, Mass},
}

@Book{OL4426985M,
    title: {Muybridge's Complete human and animal locomotion},
    author: {Eadweard Muybridge},
    publisher: {Dover Publications},
    year: {1979},
    place: {New York},
}

@Author{OL249638A,
    name: {Eadweard Muybridge},
    birth_date: {1830}
    , death_date: {1904}
}