PACS:01.10.Fv DOI:10.1070/PU1976v019n09ABEH005293 URL: https://ufn.ru/en/articles/1976/9/e/ Citation: Esel’son B N, Grigor’ev V N, Mikheev V A "Experimental Observation and Investigation of Quantum Diffusion in Solid Helium" Sov. Phys. Usp.19 766–767 (1976)