1. L. Schlapback and A. Züttel, Nature 414, 353 (2001).
2. P. Vajesston, P. Ravindran, B. C. Hauback, H. Fjellvåg, A. Kjekshus, S. Furuseth, and M. Hanfland, Phys. Rev. B 73, 224102 (2006).
3. K. Klyukin, M. G. Shelyapina, and D. Fruchart, in Proceedings of the NMRCM, St.-Petersburg, Russia, June 27–July 1, 2011, p. 70.
4. A. R. Leach, Molecular Modeling Principles and Applications (Longman, Singapore, 1997).
5. P. Vajeeston, P. Ravindran, A. Kjekshus, and H. Fjellvåg, Phys. Rev. Lett. 89, 175506 (2002).