Ievlanov, M., Serdiuk, N., Feshchenko, A., Duiunova, T., Kiriienko, M., Cherepnov, I., Pivnenko, L. and Dyakonov, V. 2020. Improving the mathematical model of change in the body state of an employee. Eastern-European Journal of Enterprise Technologies. 1, 10 (103) (Feb. 2020), 32–42. DOI:https://doi.org/10.15587/1729-4061.2020.195755.