%0 Journal Article %T VIRTUAL OCTANE ANALYZER OF HEAVY REFORMAT %A Demidchenko, E.A. %A Istomin, A.L. %K multiple linear regression, least squares method, virtual analyzer, Fisher's method %J Bulletin of the Angarsk State Technical University %D 2025 %N 1 %P 2 %I Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»