SOAS’ Online Research Repository offers “An open access collection of research papers from the School of Oriental and African Studies“. Records may be browsed and searched for by Title/Abstract/Keywords, Authors/Editors and Date. An Advanced Search gives even more options.
I did a simple search for papers on Hausa and was given the following results:
- Jaggar, Philip J.
Quantification and Polarity: Negative Adverbial Intensifiers (’Never Ever’, ’Not At All’, etc.) in Hausa - Jaggar, Philip J.
The Hausa perfective tense-aspect used in wh-/focus constructions and historical narratives: a unified account - Jaggar, Philip J.
More on in situ WH- and focus constructions in Hausa
These papers can be downloaded as PDF-files.