Colossal electroresistance in La0.8Ca0.2MnO3 films on 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 substrates S. Y. Wang and J. Gao EPL, 97 5 (2012) 57009 Published online: 05 March 2012 DOI: 10.1209/0295-5075/97/57009