@book { DieEntwicklungvonDiskursmarkern,
    title = "Die Entwicklung von Diskursmarkern",
    author = "Philipp {Schaan}",
    year = "2013",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656430902",
    url = "https://www.hausarbeiten.de/document/215229"
}