TY JOUR TI Criminal law protection of witnesses and victims (comparative analysis experience) KW defense KW victim KW witness KW law KW responsibility JO Vestnik of the St. Petersburg University of the Ministry of Internal Affairs of Russia AU Denisov, S.A. AU Kirsanova, T.A. PY 2021 IS 2021 PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION