Kosevtsov , V., Mashtalir , V., Tikhonov , G. and Bilyk , A. 2021. Historical grounds of introduction of the process of certification of military servants of military organizational structures. Social Development and Security. 11, 6 (Dec. 2021), 31-40. DOI:https://doi.org/10.33445/sds.2021.11.6.3.