Intrinsic tunnelling effects in self-doped La0.89MnO3 single crystals V. Markovich, G. Jung, M. Belogolovskii, Y. Yuzhelevski, G. Gorodetsky and Ya. M. Mukovskii Eur. Phys. J. B, 50 4 (2006) 587-592 Published online: 17 May 2006 DOI: 10.1140/epjb/e2006-00178-9