PACS:42.50.Gy, 42.50.Ct, 52.50.Jm, 42.55.Px, 42.55.Ks (all) DOI:10.1070/PU1973v016n01ABEH005159 URL: https://ufn.ru/en/articles/1973/1/p/ Citation: Isakov A I, Krokhin O N, Prokhorov A M, Skobel’tsyn D V, Sobel’man I I "Nikolai Gennadievich Basov (on his fiftieth birthday)" Sov. Phys. Usp.16 165–166 (1973)