References
- Stedman , R. and Nilsson , G. 1966 . Phys. Rev. , 145 ( 2 ) : 492
- J. Perßon, JCNS, Forschungszentrum Jülich GmbH, unpublished.
- Moussa , F. , Hennion , M. , Wang , F. , Kober , P. , Rodríguez-Carvajal , J. , Ruetler , P. , Pinsard , L. and Revcolevschi , A. 2003 . Phys. Rev B , 67 : 214430