Błocka B. Free Vibrations of Thin, Elastic, Orthogonally Stiffened Shells of Revolution with Stiffeners Treated as Discrete Elements. Eng. Trans. [Internet]. 1989 Mar. 31 [cited 2025 Apr. 24];37(1):65-87. Available from: https://et3.ippt.pan.pl/index.php/et/article/view/1656