Ultrahigh-vacuum system for surface studies using high-energy ion scattering and x-ray photoemission spectroscopy - Smith, R. J.; Whang, C. N.; Mingde, Xu; Worthington, M.; Hennessy, C.; Kim, M.; Holland, N. (American Institute of Physics (AIP), 1987)
http://dx.doi.org/10.1063/1.1139337
Keywords: U; ZN