%0 Conference Paper %1 WaP99 %A Wagner, R. %B Classification in the Information Age %C Berlin %D 1999 %E Gaul, W. %E Locarek-Junge, H. %I Springer %K 1999 Wettbewerbsinteraktionen_und_Competitive_Intelligence myown proceedings %P 536 -- 544 %T Modeling and Measuring of Competitive Reactions to Changes of Marketing Mix at the Retail Level