What are you intending to put into this white paper as Automated testing is a big area? What is your intended message/audience and what are you trying to push with it - a service, an idea, data on a tool/approach?
What is the intent of the looking for exisitng white papers - style guide, reference material to back up your own paper?
Not sure you will find an exact source as the original request lacks the context to provide an exacting guide to a specific URL. Have you tried the QA Downloads section her or Stickyminds both of which contain a number of papers on automated testing of various types and levels?
Agile Testers of the World UNIT!
Thanks Neill McCarthy, You have taken enough time to respond me. I am a trainee here working for a professional team with a vast experience in drafting white papers. I will definitely figure out as to what exactly I should concentrate. Thanks a lot for the guidance given.