PACS:01.60.+q, 52.80.−s (all) DOI:10.1070/PU1975v017n04ABEH004659 URL: https://ufn.ru/en/articles/1975/4/ai/ Citation: Biberman L M, Prokhorov A M, Fabrikant V A, Khokhlov R V "Nikolai Nikolaevich Sobolev (on his sixtieth birthday)" Sov. Phys. Usp.17 623–624 (1975)