@book { BuddhadasaBhikkhu19061993,
    title = "Buddhadasa Bhikkhu (1906-1993)",
    author = "Hans-Bernd {Zöllner}",
    year = "2021",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1100170"
}