Akashdeep Kamra, Stefan von Hoesslin, Niklas Roschewsky, Johannes Lotze, Michael Schreier, Rudolf Gross, Sebastian T. B. Goennenwein, Hans Huebl: Torque differential magnetometry using quartz tuning forks. 2015Eur. Phys. J. B: 88. http://epjb.epj.org/articles/epjb/abs/2015/09/b150380/b150380.html