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  1. Crestani, F.; Du, H.: Written versus spoken queries : a qualitative and quantitative comparative analysis (2006) 10.60 
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    Du, H.
  2. Du, H.; Hao, J.-X..; Kwok, R.; Wagner, C.: Can a lean medium enhance large-group communication? : Examining the impact of interactive mobile learning (2010) 10.60 
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