Surianinov, Mykola, Tetiana Yemelianova, and Dina Lazarieva. 2019. “Analytical and Computer Research of Stability of Three Layer Shells, Supported by Stiffness Ribs”. International Journal of Engineering & Technology 7 (4): 6797-6800. https://doi.org/10.14419/ijet.v7i4.24672.