Діденко, Сергій Володимирович, and Роман Сейранович Мкртчян. 2019. “THEORY AND HISTORY OF ADMINISTRATIVE SERVICES IN UKRAINE”. Scientific Works of National Aviation University. Series: Law Journal "Air and Space Law" 2 (51):70-76. https://doi.org/10.18372/2307-9061.51.13781.