@book { ZumProblemderLeerheitnyatinderPrajpramit,
    title = "Zum Problem der Leerheit «(śūnyatā)» in der «Prajñāpāramitā»",
    author = "Yoke Meei {Choong}",
    year = "2006",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1100845"
}