Grigorenko, O., Parkhomenko, O., Darmosiuk, V., & Vasil’eva, L. (2020). Discovering a pattern in the free vibrations of gently sloping shells of different geometry in the classic and refined statements. Eastern-European Journal of Enterprise Technologies, 2(7 (104), 19–25. https://doi.org/10.15587/1729-4061.2020.198661