"It is a phenomenon observed in forecast driven supply chain and describes that the variation in demand increases up the supply chain from consumer to supplier." [http://www.scribd.com/doc/17392509/Bullwhip-Effect]
-> the more steps that are in between of the consumer and the supplier, the bigger the variation gets
[http://www.scribd.com/doc/17392509/Bullwhip-Effect]

[http://maja.uni-mb.si/files/apem/APEM3-1_045-055.pdf]