00726naa#a2200217#i#450# EN\\bibl\9814 20250107200805.2 2308-8877 20151203b2015####ek#y0engy0150####ca RUS RU Mathematical description of the stages of thermal expansion of pyrolysis waste wooden sleepers Journal article Voronezh FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov 2015 4 с. Journal article local Savelev A. Khayrullina E. Khayrullina M. Tuntsev D. Romancheva I. anni.editorum.ru