Geodesic
Stability of inflectional elasticae centered at vertices or inflection points
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Differential equations and topology. II, Tome 271 (2010), pp. 187-203.

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Stability conditions for inflectional Euler's elasticae centered at vertices or inflection points are obtained. Theoretical results are compared with experimental data for elastic rods. 
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Yu. L. Sachkov; S. V. Levyakov. Stability of inflectional elasticae centered at vertices or inflection points. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Differential equations and topology. II, Tome 271 (2010), pp. 187-203. http://geodesic.mathdoc.fr/item/TM_2010_271_a13/

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