R.  C. Sankar, Vijayanand, S., Verma, S., and Joy, P. Alias, ?Direct comparison of the aging and memory effects of magnetic nanoclusters and nanoparticles?, Solid State Communications, vol. 141, no. 6, pp. 307-310, 2007.

S. N.  Kale, Jadhav, A. D., Verma, S., Koppikar, S. J., Kaul-Ghanekar, R., Dhole, S. D., and Ogale, S. B., ?Characterization of biocompatible NiCo2O4 nanoparticles for applications in hyperthermia and drug delivery?, Nanomedicine-Nanotechnology Biology and Medicine, vol. 8, no. 4, pp. 452-459, 2012.