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

Bangladesh GPS Network - SSPS-Sangai Shapi P.S.
Start: 13-Feb-2018
End: 10-Apr-2019
Steckler, Michael, Humayun Akhter, Syed, 2018, Bangladesh GPS Network - SSPS-Sangai Shapi P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T570806Q