PACS:32.30.Bv, 43.50.+q, 33.25.-j, 42.65.−k (all) DOI:10.1070/PU1978v021n07ABEH005666 URL: https://ufn.ru/en/articles/1978/7/c/ Citation: Novikov L N, Skrotskii G V "Nonlinear and parametric effects in atomic rf spectroscopy" Sov. Phys. Usp.21 589–610 (1978)