TY JOUR TI CLASSIFICATION OF TECHNOLOGICAL PROCESSES OF REFINING HEAVY HYDROCARBONS RESIDUES KW heavy hydrocarbon residues KW deep processing KW classification KW basic types of residues JO Vestnik of Astrakhan State Technical University AU Nurakhmedova, A.. AU Ramazanova, A.. AU Savenkova, I.. AU Tarakanov, G.. PY 2017 IS 2017 PB Astrakhan State Technical University