@Book{OL3162302M,
    title: {A history of Russia},
    author: {Nicholas Valentine Riasanovsky and Mark D. Steinberg},
    publisher: {Oxford University Press},
    year: {1984},
    place: {New York},
}

@Author{OL242318A,
    name: {Nicholas Valentine Riasanovsky},
    birth_date: {1923}
    , death_date: {2011}
}
@Author{OL656002A,
    name: {Mark D. Steinberg},
    birth_date: {1953}
}