M. Klinga et al., Crystal structure of catena-poly[(dimethyl(2-hydroxyethyl)ammonium)-{sodium-mu-[aquatris(dimethyl(2-hydroxyethyl)ammonium)-sodiumheptamolybdato(VI)-O',O '',O ''': O ''''',O '''''']}diwater], {(C4H12NO)[(C4H12NO)(3)(H2O)Na2Mo7O24]center dot 2H(2)O}(n), Z KRIST-NEW, 216(1), 2001, pp. 132-134