Musaeva, Khaibat Magomedtagirovna, Basir Khabibovich Aliev, Elmira Bashirovna Alieva, Murad Musaevich Magomedtagirov, and Mazika Musabekovna Imanshapieva. 2015. “Problems of Implementation of Principles of Social Justice and Economic Efficiency in the Mechanism of Charging Personal Income Tax (PIT) in the Russian Federation”. International Journal of Economics and Financial Issues 5 (3S):105-12. https://www.econjournals.com/index.php/ijefi/article/view/1697.