PACS:71.35.−y, 63.20.Ls, 63.20.Kr (all) DOI:10.1070/PU1973v015n05ABEH005043 URL: https://ufn.ru/en/articles/1973/5/k/ Citation: Levinson I B, Rashba E I "Bound States of Electrons and Excitons with Optical Phonons in Semiconductors" Sov. Phys. Usp.15 663–664 (1973)