@book { DasKonzeptdesEntdeckendenLernens,
    title = "Das Konzept des Entdeckenden Lernens",
    author = "Marika {Ziron}",
    year = "2005",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783638396417",
    url = "https://www.hausarbeiten.de/document/41365"
}