Anisotropic dielectric and ferroelectric response of multiferroic LiCu2O2 in magnetic fieldLi Zhao, Kuo-Wei Yeh, Sistla Muralidhara Rao, Tzu-Wen Huang, Phillip Wu, Wei-Hsiang Chao, Chung-Ting Ke, Cheng-En Wu and Maw-Kuen WuEPL, 97 3 (2012) 37004DOI: https://doi.org/10.1209/0295-5075/97/37004