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

Telica Volcano GPS Network - SALN-Salmeron_NIC2010 P.S.
Start: 13-Mar-2010
End: 10-Mar-2014
LaFemina, Peter, 2014, Telica Volcano GPS Network - SALN-Salmeron_NIC2010 P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5GM85CD