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

Afar GPS Network - DATR-Teru Continuous P.S.
Start: 14-Mar-2007
End: 03-Jun-2009
Calais, Eric, 2008, Afar GPS Network - DATR-Teru Continuous P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5057D05