TY JOUR TI Features of forensic examination of domestically produced antipersonnel mines PMN-4 KW antipersonnel mine KW explosive substance KW explosive device KW engineering ammunition KW forensic explosive expertise KW expert experiment JO Vestnik of the St. Petersburg University of the Ministry of Internal Affairs of Russia AU Korovkin, D.S. AU Grigor'ev, A.Y. PY 2022 IS 2022 PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION