The dependence of Nd16Fe73.9Zr2.1B8 alloy phase composition on milling conditions in hydrogen - I. I. Bulyk; A. M. Trostianchyn; V. V. Burkhovetskyi; I. V. Borukh; Z. A. Duriahina; I. A. Lemishka (Materials Science (Physicochemical mechanics of materials), 2014)