Study of the positive muon Knight shift in UNi2Al3: Evidence for a tetravalent U4+-state and crystalline electric field splittingA. Schenck, N. K. Sato, G. Solt, D. Andreica, F. N. Gygax, M. Pinkpank and A. AmatoEur. Phys. J. B, 13 2 (2000) 245-256DOI: https://doi.org/10.1007/s100510050029