1. Sharma P, Gupta A, Rao KV, Owens FJ, Sharma R, Ahuja R, Guillen JMO, Johansson B, Gehring GA (2003) Nat Mater 2:673–677
2. Behan AJ, Mokhtari A, Blythe HJ, Score D, Xu X-H, Neal JR, Fox AM, Gehring GA (2008) Phys Rev Lett 100(4):047206-1–047206-4
3. He Y, Sharma P, Biswas K, Liu EZ, Ohtsu N, Inoue A, Inada Y, Nomura M, Tse JS, Yin S, Jiang JZ (2008) Phys Rev B 78:155202-1–155202-7
4. Ney A, Ney V, Ye S, Ollefs K, Kammermeier T, Kaspar TC, Chambers SA, Wilhelm F, Rogalev A (2010) Phys Rev B 82:041202(R)-1–041202(R)-4
5. Sato W, Itsuki Y, Morimoto S, Susuki H, Nasu S, Shinohara A, Ohkubo Y (2008) Phys Rev B 78:045319-1–045319-5