I am writing a paper related to Enterprise Resource Planning (ERP) and
the affects that ERP has on innovation within the firm.  I need to
find a list of companies that have implemented an Enterprise Resource
Planning (ERP) system.

Thank you for your question.
 
I believe that to answer it well, your question will require more time
and effort than the average amount of time and effort associated with
this price. Here is a link to guidelines about pricing your question,
in the pricing guide: https://answers.google.com/answers/pricing.html