PACS:33.80.Gj, 33.10.Gx, 31.30.Gs (all) DOI:10.1070/PU1978v021n02ABEH005526 URL: https://ufn.ru/en/articles/1978/2/j/ Citation: Belenov E M, Isakov V A, Markin E P, Oraevskii A N "Reply to the letter of G. A. Askar'yan" Sov. Phys. Usp.21 183–183 (1978)