, 27 June 2009 (UTC)
I know of no explicit source but everyone knows that GPS requires general relativistic corrections to clocks in orbit, and no one published the corrections before Winterberg. So very simple to state these facts. If this were clearly stated on the discussion page it would at least embarass them. Directly related facts are commonly inserted into Wikipedia articles, they should not be objecting. 173.169.90.98  10:52