Georgescu, Adelina, and Iuliana Oprea. “The Bifurcation Curve of the Characteristic Equation Provides the Bifurcation Point of the Neutral Curve of Some Elastic Stability”. Anal. Numér. Théor. Approx. 17, no. 2 (August 1, 1988): 141–145. Accessed November 25, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1988-vol17-no2-art6.