@book{handbuch+der+wasserbaukunst+theil+3+das+meer+bd+3+seeufer+und+hafen+bau,
    author = {Hagen, Gotthilf},
    title = {Handbuch der Wasserbaukunst. Theil 3, Das Meer. Bd. 3, Seeufer- und Hafen-Bau},
    address = {Berlin},
    publisher = {Verlag von Ernst & Korn},
    date = {1880}
}