00706naa#a2200205#i#450# EN\\bibl\47362 20220819105246.5 1812-9498 20211130b2021####ek#y0engy0150####ca RU Mathematical modeling nonstationarity of biotechnological production of lactic acid: stability Journal article Astrakhan Astrakhan State Technical University 2021 14 с. Journal article local Биологические науки. 57 Gordeeva Yuliya Lvovna Borodkin Aleksey Georgievich Gordeeva Elena Lvovna Komissarov Yuriy Alekseevich vestnik.astu.org