%0 Journal Article %T Mathematical modeling nonstationarity of biotechnological production of lactic acid: stability %A Gordeeva, Y.. %A Borodkin, A.. %A Gordeeva, E.. %A Komissarov, Y.. %K The work was carried out with the financial support of Mendeleev University of Chemical Technology %J Vestnik of Astrakhan State Technical University %D 2021 %N 2021 %P 14 %I Astrakhan State Technical University