TY JOUR TI CALCULATION OF THE QUALITY INDICATORS OF BASE OIL COMPONENTS USING A SOFTWARE ALGORITHM KW algorithmization KW programming KW mathematical modeling KW petroleum products KW oils viscosity index JO Scientific Papers Collection of the Angarsk State Technical University AU Demidchenko, E.A. AU Stadnik, A.V. PY 2025 IS 2025 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»