1. A note on some investigations carried out in the area of the Sudan Plain to be affected by the Jonglei Canal
2. R.O. Collins (1987 ) The Jonglei Canal, the past and present of a future . The Sixth Trevelyan Lecture 1986, pp.1 -52 . University of Durham, Durham.
3. Euroconsult (1978 ) Jonglei Environmental Aspects. A report to the National Council for Development Projects in the Jonglei Canal Area , pp.1 -105 . Euroconsult, Arnhem, The Netherlands.
4. Fish communities in the perennial wetland of the Sudd, southern Sudan
5. Fish communities in the eastern, seasonal-floodplain of the Sudd, Southern Sudan