PACS:01.10.Fv DOI:10.1070/PU1979v022n08ABEH005596 URL: https://ufn.ru/en/articles/1979/8/h/ Citation: Basov N G, Belenov E M, Vedeneev S I, Motulevich G P, Nikitin V V "Frequency multiplication in the 1010-1013 Hz range with the aid of weak superconductive couplings" Sov. Phys. Usp.22 662–663 (1979)