Study by PriceWaterhouseCoopers, The Impact on Universal Service of the Full Market Accomplishment of the Postal Internal Market in 2009, Final Report, May 2006.
PricewaterhouseCoopers’i uuring „The Impact on Universal Service of the Full Market Accomplishment of the Postal Internal Market in 2009” (Universaalteenuse mõju postiteenuste siseturu rajamise täielikule lõpuleviimisele 2009. aastal), lõpparuanne, mai 2006.