Citation: Philippe Gall; R\'egis Gautier; Jean-Fran\,cois Halet; Patrick Gougeon (1999). Synthesis, Physical Properties, and Theoretical Study of R~16~Mo~21~O~56~ Compounds (R = La, Ce, Pr, and Nd) Containing Bioctahedral Mo~10~ Clusters and Single Mo Atoms. Inorganic Chemistry, 38, pp. 4455-4461.