TY JOUR TI ECONOMIC ASSESSMENT OF USE OF BIOLOGICALLY PURE FUEL ON TRANSPORT KW natural gas KW bus KW fuel KW agriculture KW economy KW ecology KW operation KW waste KW biogas JO Alternative energy sources in the transport-technological complex: problems and prospects of rational use of AU Merzlikina, K.. AU Solodovnikov , D.. PY 2014 IS 1 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov