Resonant-Raman study of Fröhlich exciton–phonon interaction in WS2 nanostructuresPrahalad Kanti Barman, Prasad V. Sarma, Manikoth M. Shaijumon and Rajeev N. KiniEur. Phys. J. Spec. Top., 231 4 (2022) 743-748DOI: https://doi.org/10.1140/epjs/s11734-021-00389-2