I. I. Sugoniak, A. M. Kovalchuk, and A. O. Danylchenko, “PROFESSIONAL CERTIFICATION AS MEANS OF THE INCREASE OF THE LEVEL OF STUDENTS’ PRACTICAL PREPARATION OF IT-SPECIALITIES”, ITLT, vol. 53, no. 3, pp. 109–122, Jul. 2016, doi: 10.33407/itlt.v53i3.1424.