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

Africa Array GPS Network - UKAM-UNIKAM P.S.
Start: 25-Oct-2010
End: 24-Feb-2013
Delvaux, Damien, 2010, Africa Array GPS Network - UKAM-UNIKAM P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T57D2SCB