S.  Vijayanand, Potdar, H. S., and Joy, P. Alias, ?Origin of high room temperature ferromagnetic moment of nanocrystalline multiferroic BiFeO3?, Applied Physics Letters, vol. 94, no. 18, p. 182507, 2009.

V.  E. Gopalan, Joy, P. Alias, Al-Omari, I. A., D. Kumar, S., Yoshida, Y., and Anantharaman, M. R., ?On the structural, magnetic and electrical properties of sol-gel derived nanosized cobalt ferrite?, Journal of Alloys and Compounds, vol. 485, no. 1-2, pp. 711-717, 2009.