TY JOUR TI Signs of human gait and methods used to study them KW gait KW identification KW gait research methods KW signs of gait KW software tools KW structural models KW structureless models JO Forensics: yesterday, today, tomorrow AU Kupin, A.F. AU Kovalenko, A.S. PY 2026 IS 0 PB East Siberian institute of the Ministry of Internal Affairs of the Russian Federation