Published online by Cambridge University Press: 27 February 2017
* [Reproduced from the text provided to International Legal Materials by the United Nations.]
*/ Air Pollution Studies No. 4 (United Nations publication, Sales No. E.87.II.I.36).
**/ It is at present difficult to provide reliable data on the costs of control technologies in absolute terms. For cost data included in the present annex, emphasis should therefore be placed on the relationships between the costs of different technologies rather than on absolute cost figures.
***/ There is limited operational experience of this type of combustion technology.