The following information obtained from UNAVCO's online DOI system:
(https://www.unavco.org/data/doi/search/search.html)

SAGE New Zealand GPS Network - MTCX-Mount Cox P.S.
Start: 20-Jun-2007
End: 07-Dec-2011
Hager, Bradford H., Herring, Thomas A., Molnar, Peter, 2007, SAGE New Zealand GPS Network - MTCX-Mount Cox P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5FQ9TR9