1. Q.L. Liu, K.A. Khor, S.H. Chan, J. Power Sources 123, 161 (2006)
2. S.B. Adler, Chem. Rev. 4791, 104 (2004)
3. J.D. Zhang, Y. Ji, H.B. Gao, T.M. He, J. Liu, J. Alloys Compd. 322, 395 (2005)
4. Z.P. Shao, S.M. Halle, Nature 170, 431 (2004)
5. Y.S. Wang, H.W. Nie, S.R. Wang, T.L. Wen, Mater. Lett. 1174, 60 (2006)