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  • × year_i:[2010 TO 2020}
  • × type_ss:"a"
  • × author_ss:"Ratzek, W."
  1. Ratzek, W.: Problemlösung. Verifiziertes Faktum oder Illusion? (2013) 0.02 
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    Date
    22. 3.2013 14:05:39
    Source
    Information - Wissenschaft und Praxis. 64(2013) H.1, S.9-22
  2. Ratzek, W.: ¬Das Problem mit den Problemen : mögliche Auswege aus dem Dilemma (2013) 0.00 
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    Source
    Information - Wissenschaft und Praxis. 64(2013) H.6, S.343-360