@book { Bokutotsus,
    title = "Bokutotsusô",
    subtitle = "Studies on the Calligraphy of the Zen Master Musô Soseki (1275-1351)",
    author = "Ildegarda {Scheidegger}",
    year = "2005",
    publisher = "Peter Lang Verlag",
    address = "Lausanne, Switzerland",
    url = "https://www.peterlang.com/document/1098909"
}