Low-temperature acoustic properties of nanostructured zirconium prepared by the intensive plastic deformation technique - E. N. Vatazhuk; P. P. Pal-Val; V. D. Natsik; L. N. Pal-Val; M. A. Tikhonovskij; A. N. Velikodnyj; P. A. Khajmovich (Low Temperature Physics, 2011)