Lewiński, J., Magnucka-Blandzi, E. and Szyc, W. (2015) “Shear Modulus of Elasticity for Thin-Walled Trapezoidal Corrugated Cores of Seven-Layer Sandwich Plates”, Engineering Transactions, 63(4), pp. 421–438. doi:10.24423/engtrans.309.2015.