NONLINEAR REGRESSION MODELS FOR ESTIMATING THE DURATION OF SOFTWARE DEVELOPMENT IN JAVA FOR PC BASED ON THE 2021 ISBSG DATA - Prykhodko, S. B.; Pukhalevych, A. V.; Prykhodko, K. S.; Makarova, L. M. (Radìoelektronika, informatika, upravlìnnâ, 2022)