@book { EnhancingtheEffectivenessoftheEUPublicProcurementFramework, title = "Enhancing the Effectiveness of the EU Public Procurement Framework", author = "Asta {Gerhardt}", year = "2020", publisher = "Peter Lang Verlag", address = "Berlin, Germany", doi = "10.3726/b16594", url = "https://www.peterlang.com/document/1114318" }