Bullwhip effect - some resources

The following online resources are on the topic of Bullwhip effect, which is studied in the subject of Supply Chain Management:

1. Basic description: http://www.aalhysterforklifts.com.au/index.php/about/blog-post/what_is_the_bullwhip_effect_understanding_the_concept_definition
2. General information: http://en.wikipedia.org/wiki/Bullwhip_effect
3. A related video: http://www.youtube.com/watch?v=e4K8pJ-wBHE&feature=related