PACS:01.60.+q, 33.50.−j, 42.50.−p (all) DOI:10.1070/PU1974v016n05ABEH004182 URL: https://ufn.ru/en/articles/1974/5/u/ Citation: Gruzinskii V V, Stepanov B I, Tolkachev V A, Fedorov F I "Nikolai Aleksandrovich Borisevich (On his Fiftieth Birthday)" Sov. Phys. Usp.16 758–759 (1974)