Бабін, Ігор Іванович, and Людмила Василівна Вакарюк. 2016. “The Tax As a Systemically Important Category of Subject of Tax Law”. Scientific Works of National Aviation University. Series: Law Journal "Air and Space Law" 3 (40):61-66. https://doi.org/10.18372/2307-9061.40.10821.