Johnson, R.L., Villa, E.M., Ohlin, C.A., Rustad, J.R. and Casey, W.H. (2011) 17O NMR and computational study of a tetrasiliconiobate ion, [H2+xSi4Nb16O56](14x). Chemical Europe Journal, 17, 9359-9367. doi10.1002/chem.201100004 - References - Scientific Research Publishing