TY JOUR TI About second mixed moment functions for solution of diffusion equation with random coefficients KW diffusion equation KW random process KW moment function KW variational derivative JO Actual directions of scientific researches of the XXI century: theory and practice AU Dubrovskiy, I.. PY 2014 IS PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov