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

CVO GPS Network - WIFR-Wife Reset P.S.
Start: 29-Oct-2008
End: 05-Jun-2018
Lisowski, Michael, 2012, CVO GPS Network - WIFR-Wife Reset P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5ST7MZW