Commission's report on the economic effects of public procurement ‘A report on the functioning of public procurement markets in the EU: benefits from the application of EU directives and challenges for the future’, 3.2.2004.http://europa.eu.int/comm/internal_market/publicprocurement/docs/public-proc-market-final-report_en.pdf.
Komisjoni ettekanne riikliku tellimuse majandusliku efekti kohta “Ettekanne riiklike tellimuste turgude funktsioneerimise kohta ELis: ELi direktiivide rakendamise kasu ja tuleviku väljakutsed”, 3.2.2004.http://europa.eu.int/comm/internal_market/publicprocurement/docs/public-proc-market-final-report_en.pdf.