Grain boundary ferromagnetism in vanadium-doped In2O3 thin filmsQi Feng, Harry J. Blythe, A. Mark Fox, Xiu-Fang Qin, Xiao-Hong Xu, Steve M. Heald and Gillian A. GehringEPL, 103 6 (2013) 67007DOI: https://doi.org/10.1209/0295-5075/103/67007