Geodesic
Steplike contrast structures for a second-order ordinary differential equation with a small parameter multiplying the highest derivative
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 49 (2009) no. 12, pp. 2131-2143

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A boundary value problem is considered for a second-order nonlinear ordinary differential equation with a small parameter multiplying the highest derivative. The limit equation has three solutions, of which two are stable and are separated by the third unstable one. For the original problem, an asymptotic expansion of a solution is studied that undergoes a jump from one stable root of the limit equation to the other in the neighborhood of a certain point. A uniform asymptotic approximation of this solution is constructed up to an arbitrary power of the small parameter. 
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     author = {S. F. Dolbeeva and E. A. Rozhdestvenskaya},
     title = {Steplike contrast structures for a~second-order ordinary differential equation with a~small parameter multiplying the highest derivative},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {2131--2143},
     publisher = {mathdoc},
     volume = {49},
     number = {12},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2009_49_12_a3/}
}
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S. F. Dolbeeva; E. A. Rozhdestvenskaya. Steplike contrast structures for a second-order ordinary differential equation with a small parameter multiplying the highest derivative. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 49 (2009) no. 12, pp. 2131-2143. http://geodesic.mathdoc.fr/item/ZVMMF_2009_49_12_a3/