TY JOUR TI LEGAL GROUNDS FOR TAKING SECURITY MEASURES FOR PARTICIPANTS OF CRIMINAL PROCEDURE KW state protection KW the grounds for taking security measures KW the conditions of application of security measures JO Vestnik of the East Siberian institute of the Ministry of internal affairs of the Russian Federation AU Stepanova, V.G. PY 2017 IS PB East Siberian institute of the Ministry of Internal Affairs of the Russian Federation