%0 Journal Article %A N. V. Rastegaev %T On the sufficient conditions for the S-shaped Buckley--Leverett function %J Zapiski Nauchnykh Seminarov POMI %D 2024 %P 247-260 %V 536 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_2024_536_a11/ %G en %F ZNSL_2024_536_a11