TY JOUR TI The identical transformations are the threat of equations equivalens KW identical transformations KW equivalence equations. JO Actual directions of scientific researches of the XXI century: theory and practice AU Bondarenko, T.. AU Malakeeva, N.. PY 2015 IS 3 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov