On the possible pyrochlore to aurivillius phase transition in the complex oxide CaCd2Bi2Nb4O15 M. L. Craus, I. Rusu, A. Rusu and N. ApostolescuJ. Phys. IV France, 11 PR10 (2001) Pr10-109-Pr10-113DOI: https://doi.org/10.1051/jp4:20011015