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</html><description>Dominique P. Chevallier is Emeritus Research Director at Navier Laboratory, Ecole Nationale des Ponts et Chauss&#xE9;es in France. His research interests are the mathematical methods of mechanics. Jean Lerbet is Professor at the Universities of Evry and Paris Saclay in France. His research interests include differential geometry and mechanics, and stability.</description></oembed>
