M. Pētersone, D. Krieviņš, K. Ketners, and O. G. Rakauskienė, “ECONOMIC FACTORS OF CLINICAL TRIALS OF MEDICINES IN SMALL POPULATION COUNTRIES: CASE STUDY OF LATVIA”, SIE, vol. 4, pp. 428–438, May 2021, doi: 10.17770/sie2021vol4.6143.