Study of the Process of Gas Emission from Ni Nanocrystalline Powders Fabricated by Ball Grinding in Ultrasonic Mill - A. E. Perekos; B. N. Mordjuk; V. N. Kolesnik; G. I. Prokopenko; T. V. Efimova; V. P. Zalutskij; T. V. Ruzhitskaja; N. D. Rud (Metallophysics and advanced technologies, 2011)