1. Bonn Agreement, 1983. Full text of the agreement for co-operation in dealing with pollution of the North Sea by oil and other harmful substances, 1983. Available from: .
2. Bonn Agreement, 1993. Annual Report of Aerial Surveillance in 1992. Ref: BAWGOTSOPA 25/4/3-E. Agenda Item 4(i) of the twenty-fifth meeting of the Working Group on Operational, Technical and Scientific Questions concerning Counter Pollution Activities, Tønsberg, 25–28 May 1993. Bonn Agreement, London.
3. Bonn Agreement Annual Report on Aerial Surveillance 1997;Bonn Agreement,1997
4. Bonn Agreement, 1998a. Area Map. Available from: .
5. Bonn Agreement Annual Report on Aerial Surveillance 1998;Bonn Agreement,1998