%0 Journal Article %A M. V. Gasanov %A A. G. Gulkanov %T A Study of a Mathematical Model with a Movable Singular Point in a Fourth-Order Nonlinear Differential Equation %J Russian journal of nonlinear dynamics %D 2023 %P 575-584 %V 19 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2023_19_4_a7/ %G en %F ND_2023_19_4_a7