A density functional study of atomic hydrogen and oxygen chemisorption on the relaxed (0001) surface of double hexagonal close packed americiumP. P. Dholabhai, R. Atta-Fynn and A. K. RayEur. Phys. J. B, 61 3 (2008) 261-270DOI: https://doi.org/10.1140/epjb/e2008-00071-7