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

Bangladesh GPS Network - KHUL-Khulna University P.S.
Start: 15-May-2003
End: 04-Aug-2008
Steckler, Michael, Humayun Akhter, Syed, Seeber, Leonardo, 2016, Bangladesh GPS Network - KHUL-Khulna University P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T50G3HZJ