@Book{OL7094785M,
    title: {A system of logic ratiocinative and inductive},
    author: {John Stuart Mill and Louis Peisse},
    publisher: {Longmans, Green, Reader, adn Dyer},
    year: {1868},
    place: {London},
}

@Book{OL13990421M,
    title: {An essay in aid of a grammar of assent},
    author: {John Henry Newman},
    publisher: {Longmans, Green},
    year: {1913},
    place: {London},
}

@Work{OL15927022W,
    title: {The foundations of arithmetic},
    author: {Gottlob Frege},
    first_publish_year: {1968}
}

@Work{OL13212915W,
    title: {The foundations of arithmetic},
    author: {G. Frege},
    first_publish_year: {1950}
}

@Author{OL6121405A,
    name: {G. Frege},
}