Resonant-Raman study of Fröhlich exciton–phonon interaction in WS2 nanostructures Prahalad Kanti Barman, Prasad V. Sarma, Manikoth M. Shaijumon and Rajeev N. Kini Eur. Phys. J. Spec. Top., 231 4 (2022) 743-748 Published online: 25 December 2021 DOI: 10.1140/epjs/s11734-021-00389-2