"A.A. Belik,S. Iikubo,Tadahiro Yokosawa,K. Kodama,N. Igawa,S. Shamoto,M. Azuma,M. Takano,Koji Kimoto,Yoshio Matsui,E. Takayama-Muromachi","Origin of the Monoclinic-to-Monoclinic Phase Transition and Evidence for the Centrosymmetric Crystal Structure of BiMnO3",,"J. Am. Chem. Soc.",,"Vol. 129","No. 4","pp. 971-977",2007,