Kröncke, Klaus. “Stability of Sin-Cones and Cosh-Cylinders ”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 18, no. 3 (May 21, 2018): 1155-1187. Accessed February 20, 2026. https://journals.sns.it/index.php/annaliscienze/article/view/610.