Major publications (since 2000)
2001. Hausa. London Oriental and African Language Library 7. 754pp. Amsterdam & Philadelphia: John Benjamins.
2002, with Ekkehard H. Wolff. Chadic and Hausa Linguistics: The Selected Papers of Paul Newman with Commentaries. Cologne: Rüdiger Köppe.
2003, with Melanie Green. Ex-situ and in-situ focus in Hausa: syntax, semantics and discourse. In Research in Afroasiatic Grammar II (Current Issues in Linguistic Theory 241), ed. by Jacqueline Lecarme, pp. 187-214. Amsterdam & Philadelphia: John Benjamins.
2005. Performative constructions in Hausa. Afrika und Übersee 88 1/2: In Memoriam Johannes Lukas, ed. by Theda Schumann, pp. 157-74.
2006a. The Hausa perfective tense-aspect used in wh-/focus constructions and historical narratives: a unified account. In West African Linguistics: Descriptive, Comparative, and Historical Studies in Honor of Russell G. Schuh, Studies in African Linguistics, Special Supplement, ed. by Larry M. Hyman and Paul Newman, pp. 100-33.
2006b. More on in situ wh- and focus constructions in Hausa. In Chadic Linguistics/Linguistique Tchadique/Tschadistik, vol. 3, ed. by Dymitr Ibriszimow, Henry Tourneux, and Ekkehard H. Wolff, pp. 49-73. Cologne: Rüdiger Köppe.
2009a. Quantification and polarity: negative adverbial intensifiers (‘never ever’, ‘not at all’, etc.) in Hausa. In Negation in West African Languages. Typological Studies in Language 87, ed. by Norbert Cyffer, Erwin Ebermann, and Georg Ziegelmeyer, pp. 52-65. Amsterdam & Philadelphia: John Benjamins.
2009b, with Malami Buba. Metaphorical extensions of ‘eat’ ---> [overcome] and ‘drink’ ---> [undergo] in Hausa. In The Linguistics of Eating and Drinking. Typological Studies in Language 84, ed. by John Newman, pp. 229-51. Amsterdam & Philadelphia: John Benjamins.
2010a. The role of comparative/historical linguistics in reconstructing the past: what borrowed and inherited words tell us about the early history of Hausa. Being and Becoming Hausa: Interdisciplinary Perspectives, ed. by Benedetta Rossi and Anne Haour, pp. 38-58. Leiden: Brill.
2010b. Relational DÀ as a preposition, coordinator, and subordinator in Hausa: Polysemy or homophony? Aspects of Co- and Subordination: Case Studies from African, Slavonic and Turkic Languages, ed. by Georg Ziegelmeyer and Norbert Cyffer, pp. 61-77. Cologne: Rüdiger Köppe.
2011a. Direct morphological causatives in Hausa: the “Grade 5” verb revisited. Proceedings of the 3rd International Conference on Hausa Studies: African and European Perspectives, ed. by Sergio Baldi and Hafizu Miko Yakasai. Studi Africanistici: Serie Ciado-Sudanese 4, pp. 171-82. Naples: University of Naples.
2011b. With Dmitry Bondarev, Doris Löhr and Abba Isa Tijani. Differential subject marking in Kanuri: Agentivity, pragmatics and split-intransitive. Kanuri, Borno and Beyond: Current Studies on the Lake Chad Region, ed. by Doris Löhr, Eva Rothmaler and Georg Ziegelmeyer, pp. 27-57. Cologne: Rüdiger Köppe.
2014. 'The Hausa "Grade 5/causative-efferential" verb: Causative, noncausative, or both? A critical assessment of previous analyses. In (eds) Stanislava Boušková and Vladimír Tax, The Relativity of Proximity and Remoteness: Communication from the Perspective of Culture and Linguistics, pp. 78-108. Prague: Charles University.
2017. The Morphological-to-Analytic Causative Continuum in Hausa: New Insights and Analyses in a Typological Perspective. Abhandlungen für die
Kunde des Morgenlandes, Band 109. Harrassowitz.Verlag.