Horodnic, Adrian Vasile, Cristian Încaltarau, Doru Lucian Botezat, și Liviu Oprea. „Evaluating Socio-Economic Variations in the Prevalence of Chronic Diseases: Some Evidence from Romania”. Social Research Reports 27 (decembrie 31, 2015): 35–48. Data accesării noiembrie 12, 2026. https://www.researchreports.ro/journal/article/view/323-evaluating-socio-economic-variations-in-the-prevalence-of.