TY JOUR TI Mathematical modeling of statistical data on the incidence of new coronavirus infection, taking into account the stratification by concomitant diagnoses KW coronavirus infection KW concomitant diagnoses KW fitting curves KW approximation KW Gaussian function KW Lorentz function KW gamma distribution KW Johnson curve JO Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics AU Borovsky, A.. AU Galkin, A.. AU Kozlova, S.. PY 2024 IS 2024 PB Astrakhan State Technical University