Nedyalkova, Plamena Georgieva, Andreeva, Andriyana Yovcheva, Yolova, Galina Ognyanova Digitalization and the New Legal and Economic Challenges to Employers in Implementing Internal Control,
Econ. Research Inst. Bulg. Acad. of Sci., 2021, pp. 158-175, ISSN 0205-3292.