LEWIƃSKI, J., MAGNUCKA-BLANDZI, E., & SZYC, W. (2015). Shear Modulus of Elasticity for Thin-Walled Trapezoidal Corrugated Cores of Seven-Layer Sandwich Plates. Engineering Transactions, 63(4), 421-438. https://doi.org/10.24423/engtrans.309.2015