V. A. Kalyashov
St. Petersburg State University of Architecture and Civil Engineering
Russian Federation

Vitaly A. Kalyashov - PhD (Technical), Associate Professor of Descriptive Geometry and Engineering Graphics of the St. Petersburg State University of Architecture and Civil Engineering.

Krasnoarmeyskaya str. 2^nd, 4, St. Petersburg, 190005

V. Ya. Shapiro
St. Petersburg State Forestry University
Russian Federation

Vladimir Ya. Shapiro - DSc (Technical), Professor of the Department of Higher Mathematics of the St. Petersburg State Forestry University.

Institutskiy per. 5, St. Petersburg, 194021

I. V. Grigorev
Arctic State Agrotechnological University
Russian Federation

Igor V. Grigoriev - DSc (Technical), Professor of the Department of Technology and Equipment of the Forest Complex of the Arctic State Agrotechnological University.

Sergelyakhskoe sh. 3 km. 3, Yakutsk, 677007

O. A. Kunitskaya
Arctic State Agrotechnological University
Russian Federation

Olga A. Kunitskaya - DSc (Technical), Professor of the Department of Technology and Equipment of the Forest Complex of the Arctic State Agrotechnological University.

Sergelyakhskoe sh. 3 km. 3, Yakutsk, 677007

O. I. Grigoreva
St. Petersburg State Forestry University
Russian Federation

Olga I. Grigorieva - PhD (Agriculture), Associate Professor of the Department of Forestry of the St. Petersburg State Forestry University.

Institutsky per. 5, St. Petersburg, 194021