Low-temperature magnetisation process in the cubic pyrochlore quantum antiferromagnet, Er2Ti2O7 O.A. Petrenko, M.R. Lees and G. Balakrishnan Eur. Phys. J. B, 86 10 (2013) 416 Published online: 07 October 2013 DOI: 10.1140/epjb/e2013-40404-9