@book { DerinternationaleVertragsschlu, title = "Der internationale Vertragsschluß", subtitle = "Ein Vergleich von UN-Kaufrecht, UNIDROIT-Principles und Principles of European Contract Law", author = "Eva {Luig}", year = "2003", publisher = "Peter Lang Verlag", address = "Berlin, Germany", url = "https://www.peterlang.com/document/1095736" }