@book{die+vorrenaissance+die+bildhauer+von+pisa+giotto+fiesole,
    author = {Philippi, Adolf},
    title = {Die Vorrenaissance : die Bildhauer von Pisa, Giotto, Fiesole},
    address = {Leipzig},
    publisher = {Verlag von E. A. Seemann},
    date = {1897}
}