@article{Frolov2016the,
author={Frolov, I.S.},
title={The use of portable x-ray equipment for detection of inner defects of timber wood.},
journal={Forestry Engineering Journal},
publisher={FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov},
year={2016},
pages={135-141},
volume={6},
issue={3},
}