A review of recent progress in understanding the spontelectric state of matterOksana Plekan, Alexander Rosu-Finsen, Andrew M. Cassidy, Jérôme Lasne, Martin R.S. McCoustra and David FieldEur. Phys. J. D, 71 6 (2017) 162DOI: https://doi.org/10.1140/epjd/e2017-80048-3