@book { ProgrammierenmitSTYLE,
    title = "Programmieren mit STYLE",
    subtitle = "Über die systematische Entwicklung von Programmierumgebungen",
    author = "Ingrid {Wetzel}",
    year = "1995",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    url = "https://www.peterlang.com/document/1115983"
}