Effects of vacuum annealing on the transport property of La0.67Sr 0.33MnO3-δ films J. R. Sun, H. W. Yeung, H. K. Wong, T. Zhu and B. G. Shen Eur. Phys. J. B, 35 4 (2003) 481-491 Published online: 24 October 2003 DOI: 10.1140/epjb/e2003-00301-6