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

British Antarctic Survey GPS Network - BREN-Brennecke Nunataks P.S.
Start: 28-Dec-2006
End: 10-Dec-2018
King, Matt, King, Edward, 2013, British Antarctic Survey GPS Network - BREN-Brennecke Nunataks P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T52V2D7X

British Antarctic Survey GPS Network - BREN-Brennecke Nunataks P.S.
Start: 10-Dec-2018
End: 21-Apr-2022
Whitehouse, Pippa, Clarke, Peter, 2013, British Antarctic Survey GPS Network - BREN-Brennecke Nunataks P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/QVD3-V090

British Antarctic Survey GPS Network - BREN-Brennecke Nunataks P.S.
Start: 28-Dec-2006
End: 21-Apr-2022
Whitehouse, Pippa, Clarke, Peter, King, Matt, King, Edward, 2013, British Antarctic Survey GPS Network - BREN-Brennecke Nunataks P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/ZR2F-CQ92