Purchase-of-service contracting in EstoniaLember, Veiko; Kriz, Kenneth A.2nd International Public Procurement Conference 2006 : Rome, Italy 21-23.09.2006 : presented papers2006 / ? p https://heakodanik.ee/sites/default/files/files/11-52-1-PB.pdf

Purchase-of-service contracting in EstoniaLember, Veiko; Kriz, Kenneth A.Halduskultuur = Administrative culture = Административная культура = Verwaltungskultur = Hallintokulttuuri. Vol. 11, no. 22010 / p. 239-254 https://artiklid.elnet.ee/record=b2369681*est