@article{Gordeeva2021mathematical, author={Gordeeva, Y.. and Borodkin, A.. and Gordeeva, E.. and Komissarov, Y..}, title={Mathematical modeling nonstationarity of biotechnological production of lactic acid: stability}, journal={Vestnik of Astrakhan State Technical University}, publisher={Astrakhan State Technical University}, year={2021}, pages={15-29}, volume={2021}, issue={2}, }