PT Journal AU Fellhauer, D Gaona, X Rothe, J Altmaier, M Fanghänel, T TI Neptunium(VI) Solubility in Alkaline CaCl₂ Solutions : Evidence for the Formation of Calcium Neptunates CaₓNpO₃₊ₓ (s,hyd) SO Monatshefte für Chemie PY 2017 BP 237 EP 252 VL 149 IS 2 DI 10.1007/s00706-017-2116-4 LA english ER