1. K. Nielsch, J. Bachmann, J. Kimling, and H. Böttner, Adv. Energy Mater. 1, 713–731 (2011).
2. G. Span, M. Wagner, S. Holzer, and T. Grasser, International Conference on Thermoelectrics, ICT, Proceedings (2006), pp. 23–28.
3. G. Span, M. Wagner, T. Grasser, and L. Holmgren, Phys. Stat. Sol. (RRL) 1, 241–243 (2007).
4. D. Fu, A.X. Levander, R. Zhang, J.W. Ager, and J. Wu, Phys. Rev. B 84, 045205 (2011).
5. T. Kumpeerapun, V. Kosalathip, H. Scherrer, A. Dauscher, W. Onreabroy, and I. Sripichai, International Conference on Thermoelectrics, ICT, Proceedings (2007), pp. 42–44.