Influence of the Nd3+ Moments on the Magnetic Behaviour of the   Oxypnictides superconductors NdFeAsO1-xFx
  This paper has been withdrawn by the authors as the available data were not sufficient to support the conclusions 
Jan-Willem G. Bos, Peter Jeglic, Emmanuelle Suard, Michela Brunelli,   Denis Arcon and Serena Margadonna