V. A. Vasilyev
Volgograd Academy of the Ministry of Interior of Russia
Russian Federation

Vasily Alexeevich Vasilyev,  Cand. Sc. (Chemistry), Associate Professor, Associate Professor of Department

Forensic Training and Scientific Complex; Traceology and Ballistics Department

400075; Volgograd

T. A. Ermakova
Volgograd State University
Russian Federation

Tatiana Aleksandrovna Ermakova, Cand. Sc. (Chemistry), Associate Professor

400062; Volgograd

Yu. A. Druzhinin
Forensic Center of the Ministry of Internal Affairs of the Russian Federation
Russian Federation

Yury Alekseevich Druzhinin, Engineer

Department of Forensic Handwriting and Documents Examinations

125130; Moscow

E. M. Aparina
Forensic Department of the Ministry of Internal Affairs of the Russian Federation for the city of Rostov-on-Don
Russian Federation

Evelina Mikhailovna Aparina, Expert

Police Department No. 3; Department in the Service Area

344103; Rostov-on-Don