M. Weiler, A. Brandlmaier, S. Gepraegs, M. Althammer, M. Opel, C. Bihler, H. Huebl, M. S. Brandt, R. Gross, S. T. B. Goennenwein: Voltage controlled inversion of magnetic anisotropy in a ferromagnetic thin film at room temperature. 2009New Journal of Physics: 11. ISBN 1367-2630 http://dx.doi.org/10.1088/1367-2630/11/1/013021