Kr. Ivanova, S.; G. Angelova, S.; N. Golkocheva-Markova, E.; D. Genova-Kalou, P.; P. Pavlova, A.; L. Georgieva, I. A Review on Dried Blood Spots (DBS) As Alternative, Archival Material for Detection of Viral Agents (Measles, Mumps, Rubella, Hepatitis B Virus). ASRJETS-Journal 2017, 30, 161-172.