PACS:74.25.Jb, 74.70.−b, 74.10.+v (all) DOI:10.1070/PU1969v012n01ABEH003917 URL: https://ufn.ru/en/articles/1969/1/d/ Citation: Builova N M, Sandomirskii V B "Experimental investigations of superconductivity in degenerate semiconductors" Sov. Phys. Usp.12 64–69 (1969)