What is decision making units?

http://mediaczar.com/blog/2008/06/the-maverick-cop-approach-to-influence-mapping-part-1/

http://mediaczar.com/blog/2008/06/influence-mapping-the-maverick-cop-way-part-2/


http://en.wikipedia.org/wiki/Buying_center


http://demo1.emeraldinsight.com/fig/3210080305001.png