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

Bangladesh GPS Network - PUST-Patuakhali Science and Technology University P.S.
Start: 25-May-2003
End: 21-Jul-2022
Steckler, Michael, Humayun Akhter, Syed, Seeber, Leonardo, 2016, Bangladesh GPS Network - PUST-Patuakhali Science and Technology University P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5CR5S5G