Strain hardening and microstructure evolution during uniaxial compression of ultrafine grained zirconium in temperature range 4.2–300 K - A. V. Podolskij; S. N. Smirnov; E. D. Tabachnikova; V. Z. Bengus; A. N. Velikodnyj; M. A. Tikhonovskij; B. Bonarski; C. Mangler; M. J. Zehetbauer (Low Temperature Physics, 2011)