@book { EinsteinandZen,
    title = "Einstein and Zen",
    subtitle = "Learning to Learn",
    author = "Conrad P. {Pritscher}",
    year = "2010",
    publisher = "Peter Lang Verlag",
    address = "New York, United States of America",
    url = "https://www.peterlang.com/document/1106275"
}