%0 Journal Article %A A. G. Podgaev %T A problem with a free boundary for nonlinear equation with a change in the direction of evolution %J Čelâbinskij fiziko-matematičeskij žurnal %D 2024 %P 407-425 %V 9 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CHFMJ_2024_9_3_a4/ %G ru %F CHFMJ_2024_9_3_a4