Geodesic
Boundary layers in the solution of singularly perturbed boundary value problem with a degenerate equation having roots of multiplicity two
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 51 (2011) no. 3, pp. 379-383 
A. B. Vasil'eva. Boundary layers in the solution of singularly perturbed boundary value problem with a degenerate equation having roots of multiplicity two. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 51 (2011) no. 3, pp. 379-383. http://geodesic.mathdoc.fr/item/ZVMMF_2011_51_3_a0/
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     title = {Boundary layers in the solution of singularly perturbed boundary value problem with a~degenerate equation having roots of multiplicity two},
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Voir la notice de l'article provenant de la source Math-Net.Ru

The occurrence of exponential boundary layers in a second-order ordinary differential equation due to the fact that the degenerate equation has a root of multiplicity two is briefly reviewed.

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