Local Instruction-Set Model for the Experiment of Pan et al
  We present a modified local realistic model, based on instruction sets that can be used to approximately reproduce the data of the Pan et al experiment. The data of our model are closer to the results of the actual experiment by Pan et al than the predictions of their quantum mechanical model. As a consequence the experimental results can not be used to support their claim that quantum nonlocality has been proven. 
Manuel Aschwanden, Walter Philipp, Karl Hess and Salvador   Barraza-Lopez