@book { Bullwhipforestereffect,
    title = "Bullwhip - forester effect",
    author = "Lasse {Skaksen}",
    year = "2013",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656500223",
    url = "https://www.hausarbeiten.de/document/233409"
}