@book{ BA08485031, author = "Kant, Immanuel and Kopper, Joachim", title = "Kritik der praktischen Vernunft", publisher = "Reclam", year = "1961", series = "Universal-Bibliothek", number = "Nr. 1111-13", URL = "https://ci.nii.ac.jp/ncid/BA08485031" }