Anatolievich Ostanin, V., Aleksandrovich Kosenko, V., & Vladimirovna Glukhova, Z. (2018). Discretionary Principles of Management: Justification of Practical Application in the Customs Service. International Journal of Engineering & Technology, 7(4.38), 375-378. https://doi.org/10.14419/ijet.v7i4.38.24585