@book { DieTagesundJahreszeitenzyklenvonCasparDavidFriedrich,
    title = "Die Tages- und Jahreszeitenzyklen von Caspar David Friedrich",
    author = "Momoko {Ochiai}",
    year = "2015",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-05870-3",
    url = "https://www.peterlang.com/document/1049547"
}