@book { BusinessPlanforanArtandSouvenirShop,
    title = "Business Plan for an Art and Souvenir Shop",
    author = "Veronika {Minkova}",
    year = "2011",
    publisher = "GRIN Verlag",
    address = "München, Germany",
    doi = "10.3239/9783656049364",
    url = "https://www.hausarbeiten.de/document/180854"
}