CIUPAC-ULICI, M.-L. “DID EUROPEAN COUNTRIES SUFFER FROM DIFFERENT CALCULATION OF HDI?”. Studia Universitatis Babeș-Bolyai Negotia, vol. 60, no. 4, Dec. 2015, pp. 95-111, http://193.231.18.162/index.php/subbnegotia/article/view/5234.