@Book{OL24591505M,
    title: {Principles of Mathematical Analysis},
    author: {Walter Rudin},
    publisher: {McGraw-Hill Publishing},
    year: {1976},
}

@Book{OL24591504M,
    title: {Analytical mechanics},
    author: {Grant R. Fowles},
    publisher: {Saunders College Publishing},
    year: {1993},
}

@Book{OL3308742M,
    title: {Warped passages},
    author: {Lisa Randall},
    publisher: {Ecco},
    year: {2005},
    place: {New York},
}

@Work{OL318782W,
    title: {The collected works},
    author: {Kahlil Gibran},
    first_publish_year: {2007}
}

@Author{OL2890A,
    name: {Kahlil Gibran},
    birth_date: {1883}
    , death_date: {1931}
}