La violence policière en Afrique de l’Ouest : Dilemmes des auteurs et des ethnographes. Paper presented in Giorgio Blundo’s seminar „L’État vu d’en bas“ at the Ecole des Hautes Etudes en Sciences Sociales E.H.E.S.S. Marseille, 27 March 2012.

L’esthétique de la bureaucratie: La rédaction des procès-verbaux dans la gendarmerie Nigérienne. Paper presented in Jean-Pierre Olivier de Sardan’s seminar „Développement, politiques publiques et modes de gouvernance: approches socio-anthropologiques“ at the Ecole des Hautes Etudes en Sciences Sociales E.H.E.S.S. Marseille, 21. bis 23. März 2012.

Violence as Normal Exception in West African Police Organizations (with Jan Beek). Paper presented for the panel “Soldaten – Rebellen – Banditen: von Corpsgeist, Freiheitsbegriff und Ehrvorstellungen“ during the biannual conference of the German Anthropological Association, Vienna, September 2011.

Violence as Normal Exception in West African Police Organizations (with Jan Beek). Paper presented during the conference “Making sense of violence? Interdisciplinary approaches to violence: past and present” in Bern, September 2011.

Distantly Close Violence Specialists: Paramilitary State Organizations in West Africa (with Jan Beek). Paper presented for the panel “‘Bureaucrats in Uniform’: Historical and Anthropological Explorations of an African Professional Field” during the European Conference on African Studies, Uppsala, June 2011.

Distantly Close Violence Specialists: Paramilitary State Organizations in West Africa (with Jan Beek). Paper presented for the workshop “Blurring of military and police roles” during the 11th Biennial conference of ERGOMAS (European Research Group on Military and Society), Amsterdam, Juni 2011.

Nähe und Ferne bei Gewaltspezialisten: Paramilitärische staatliche Organisationen in Westafrika (with Jan Beek). Paper presented in the Institutskolloquim of the Department of Anthropology and African Studies (University Mainz), 24 May 2011.

Bureaucratic aesthetics. Writing procès-verbaux in the Nigerien gendarmerie. Paper presented at the Biennial conference of the African Studies Association in Germany (VAD), 7-11 April 2010, Mainz.

Security in nocturnal Niamey – Preliminary reflections and conceptual outlook. Paper presented during the conference "Etats en Chantier en Afrique au Sud du Sahara", Niamey, Dezember 2009.

Abstention, delegation, imposition: security in nocturnal Niamey. Paper presented for the panel 'Spaces of (In)Security', during the European Conference on African Studies, Leipzig, June 2009.

Le policing au Niger. Paper presented at the Centre de recherches sociologiques sur le droit et les institutions pénales (CESDIP), Guyancourt, France, march 2009.