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  • × theme_ss:"Informationsdienstleistungen"
  1. Shachaf, P.; Oltmann, S.M.; Horowitz, S.M.: Service equality in virtual reference (2008) 10.09 
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  2. Shachaf, P.: ¬The paradox of expertise : is the Wikipedia Reference Desk as good as your library? (2009) 10.09 
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  3. Rosenbaum, H.; Shachaf, P.: ¬A structuration approach to online communities of practice : the case of Q&A communities (2010) 10.09 
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