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

Guerrero Coast GPS Network - YAIG-Yautepec P.S.
Start: 18-Feb-1999
End: 04-Mar-2004
Kostoglodov, Vladimir, Santiago, Jose A., 2002, Guerrero Coast GPS Network - YAIG-Yautepec P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T56H4FN8