R. B.  Khomane, Agrawal, A. C., Kulkarni, B. D., Gopukumar, S., and Sivashanmugam, A., ?Preparation and electrochemical characterization of lithium cobalt oxide nanoparticles by modified sol-gel method?, Materials Research Bulletin, vol. 43, no. 8-9, pp. 2497-2503, 2008.