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

Bangladesh GPS Network - RPUR-Raipur P.S.
Start: 01-Mar-2007
End: 27-May-2011
Steckler, Michael, Humayun Akhter, Syed, Seeber, Leonardo, 2007, Bangladesh GPS Network - RPUR-Raipur P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5S1819S