1. Matara;Anfray;Ann. Ethiopie,1967
2. Bard, K.A., Coltorti, M., Dramis, F., Fattovich, R., 1998. Environmental history of Tigray (Ethiopia) during the Holocene: an outline. In: Forum for African Archaeology and Cultural Heritage, Proceedings of the Workshop on Dynamics of Populations, Movements and Responses to Climatic Changes in the Archaeology of Africa, Rome, April 19–21, 1995 (in press).
3. Berakhi, O., Bisci, C., Brancaccio, L., Cinque, A., Coltorti, M., Dramis, F., 1998a. Geomorphological characteristics of some terrain units on the Highlands of Tigray (Ethiopia): preliminary findings. In: Proceedings of the International Conference Earth Sciences for Development, Asmara (Eritrea), August 1993, The Society of Eritrean Earth Scientists (in press).
4. Berakhi, O., Brancaccio, L., Cinque, A., Coltorti, M., Dramis, F., Tegene, B., 1998b. Recent geomorphological processes in the Highlands of Tigray and Wollo (Ethiopia). In: Proceedings of the International Conference on Earth Sciences for Development, Asmara (Eritrea), August 1993, The Society of Eritrean Earth Scientists (in press).
5. Beyth, M., 1971. The geology of Central-Western Tigray. Ministry of Mines, Addis Ababa.