27. Tetsuo Umegaki, Jun-Min Yan, Xin-Bo Zhang, Hiroshi Shioyama, Nobuhiro Kuriyama and Qiang Xu, Preparation and Catalysis of Poly(N-Vinyl-2-Pyrrolidone) (PVP) Stabilized Nickel Catalyst for Hydrolytic Dehydrogenation of Ammonia Borane, int. J. Hydrogen Energy, 2009, 34, 3816. (PDF)