@book{hochbaukunde+t+2+traeger+stuetzen+mauern+decken,
    author = {Daub, Hermann},
    title = {Hochbaukunde. T. 2, Träger, Stützen, Mauern, Decken},
    address = {Leipzig i Wien},
    publisher = {Franz Deuticke},
    date = {1909}
}