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Published online by Cambridge University Press: 30 March 2016
Among the nine recommendations of the Working Group on Reference Frames as finalized during the Virginia Beach meeting, four are directly addressing the reference systems. They are the result of the work of the subgroup on coordinate frames and origins and other contributors whose names are given in section 6. The resulting document (Kovalevsky, 1991) was further revised by the working group as a whole and recommendations published (1991).