Nonlocal analysis of Rayleigh-type wave propagating in a gradient layered structure Nirakara Pradhan, Shalini Saha, Sapan Kumar Samal and Snehamoy Pramanik Eur. Phys. J. Plus, 138 5 (2023) 410 Published online: 15 May 2023 DOI: 10.1140/epjp/s13360-023-04012-2