Thanks to Sylvia Deily DC for the following 2 links:
Ancient Moves for Orthopedic Problems
Shoulder Pain relief.
http://www.nytimes.com/2011/08/02/health/02brody.html?scp=1&sq=jane%20brody%20shoulder&st=cse
A research paper on rotators. This one is a bit more technical:
Maneuver Effectively Treats Rotator:
http://journals.lww.com/topicsingeriatricrehabilitation/Fulltext/2011/04000/Yoga_Based_Maneuver_Effectively_Treats_Rotator.10.aspx