Main Publications

1. Monographs – Author, Editor, Assistant Editor (Selection)
   

2. Academic Journal Editor
   

3. Main Articles (Selection)
   

Small Series of Topics (Selection)

1. Medieval Arabic Inscriptions
   

2. Honorary titles in Ethiopian history
   

3. Minorities in Ethiopian society and history
   

4. Monetary History of Northeastern Africa
   

Ethnic groups, subgroups, social groups in Northeastern Africa (Selection)

1. Tigrinnya-speakers (Tigray, Ethiopia / Eritrea)
   

2. Bilén (Eritrea)
   

3. Tigre (Eritrea)
   

4. Afar (Ethiopia / Eritrea / Djibouti)
   

5. Oromo (Ethiopia)
   

6. Ch’aré (Ethiopia)
   

7. Ethnic groups and subgroups in Western Ethiopia
   

8. Cultural Anthropology in Northeastern Africa – General
   

Northeastern Africa in the 19th to 20th centuries (Selection)

1. Modern Political History of Ethiopia: Encyclopaedia Articles
   

2. Missionary History, Missionary Sources
   

Political Anthropology and Contemporary Issues (Selection)

1. Monographs
   

2. Articles
   

History of International Relations of Ethiopia (Selection)

1. Monograph
   

2. Articles
   

Heritage Sites in Northeastern Africa and Ancient History (Selection)

Editions of Historical Sources

Biographies in Northeastern Africa

1. Groups of Actors
   

2. Individual Biographies
   

3. Travellers, geographers, explorers, early anthropologists
   

Tigray / Ethiopia: Ethnography and History (Selection)

1. Towns in Tigray
   

Eritrea: Ethnography and History

1. Towns in Eritrea
   

Northern Sudan: Ethnography and History (Selection)

Djibouti / Somalia: Ethnography and History (Selection)

Iconographic Heritage, Photography of Northeastern Africa (Selection)

1. Monograph
   

2. Articles
   

History of Social Anthropology, History of Research and Imagination of Africa (Selection)

1. Monograph
   

2. Articles
   

Encyclopaedia Articles on the History of Exploration and Research in Africa

Biographies in European Religious and Regional History (16th-19th Centuries) (Selection)

Regional History, Genealogy and Anthropology in European Regions (Eastern Frisia, Northern Germany, Saxony-Anhalt etc.) (Selection)

1. Eastern Frisia
   

2. French-German relations
   

3. Anhalt-Saxony, Thuringia
   

4. Basle, Switzerland
   

5. Northern Germany (Schleswig-Holstein)
   

6. German/Swiss-African Relations