Structural and magnetic phases of Bi1-xAxFeO3-δ (A = Sr, Pb) perovskites I. O. Troyanchuk, M. V. Bushinsky, D. V. Karpinsky, V. Sirenko, V. Sikolenko and V. Efimov Eur. Phys. J. B, 73 3 (2010) 375-381 Published online: 15 January 2010 DOI: 10.1140/epjb/e2010-00004-y