http://www.iop.org/EJ/article/0950-7671/40/9/118/siv40i9p468.pdf?request-id=b5fffc4a-5483-45fd-99ce-4c1d72710536 hey guys found this while looking for something else thought you would be interested. _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla