TY JOUR TI PROBLEMS OF BALLISTIC EXAMINATION OF 3D PRINTED WEAPONS KW expert activity KW crime investigation KW ballistic examination KW examination KW firearms KW three-dimensional printing KW additive technologies in forensics JO Forensics: yesterday, today, tomorrow AU Permyakov, A.L. AU Manzharo, V.V. PY 2025 IS 0 PB East Siberian institute of the Ministry of Internal Affairs of the Russian Federation