@book { BuildingBridgesOnline,
    title = "Building Bridges Online",
    author = "Evamaria {Nittnaus}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656023142",
    url = "https://www.hausarbeiten.de/document/179827"
}