Linguistic Analysis of the Noun Morphology of the Daju Language, 2000. ,
An Initial Description of Laggori Noun Morphology and Noun Phrase, Insights into Nilo-Saharan Language, History and Culture. Proceedings of the 9th Nilo-Saharan Linguistics Colloquium, Institute of African and Asian Studies, pp.9-24, 2004. ,
La langue bagiro (République Centrafricaine), Systématique, textes et lexique, Frankfurt am Main, 2000. ,
Dadjo-Sila, La qualification dans les langues africaines, pp.57-70, 2008. ,
A lexical Comparison of Darfur and Wadai Daju, Aspects of Language in the Sudan, Occasional Papers in Linguistics and Language Learning, vol.5, pp.145-154, 1978. ,
Langues du Soudan oriental du nord. 1. Tableau d'ensemble, Les langues dans le monde ancien et moderne (dir. J. Perrot), 1 re -2 e parties (Afrique subsaharienne-Pidgins et créoles), pp.265-276, 1981. ,
Les parlers gula (Centrafrique, Grammaire et lexique, 1999. ,
Depictive secondary predicates in crosslinguistic perspective, Linguistic Typology, pp.59-131, 2004. ,
DOI : 10.1515/lity.2004.004
A survey of the phonetics and grammatical structures of the Nuba Mountain languages, with particular reference to Otoro, Katcha and Nyimang, Afrika und Übersee, vol.40, issue.41, pp.1956-57 ,
Linguistic research in the Nuba Mountains?II, Sudan Notes and Records, vol.45, pp.79-102, 1964. ,
The Daju Language Group Systematic Phonetics, Lexicostatistics and Lexical Reconstruction, 1981. ,
The linguistic settlement of the Nuba mountains, Sprache und Geschichte in Afrika, pp.219-231, 1983. ,
The Non-Bantu Languages of North-Eastern Africa (with a Supplement on The Non-Bantu languages of Southern Africa by, 1956. ,
Linguistic Analyses, The Non-Bantu Languages of North-Eastern Africa, 1966. ,