Polariton theory of resonant electronic Raman scattering on neutral donor levels in semiconductors with a direct band gap Nguyen Ba An, Nguyen Van Hieu, Nguyen Toan Thang et Nguyen Ai VietJ. Phys. France, 41 9 (1980) 1067-1074DOI: https://doi.org/10.1051/jphys:019800041090106700