Oberthür, Sebastian 1999: Study of Impacts of GEF Activities on Phase-Out of Ozone Depleting Substances. GEF Evaluation Report. Berlin.

In this study, Ecologic provided a detailed account of the effects of GEF support and other progress made in 15 countries supported in East Europe and Central Asia awards phasing out ozone depleting substances (ODS), as mandated by the Montreal Protocol. The study is based on data reported by the countries to the Ozone Secretariat in Nairobi, and by data from the implementing agencies and verified by the countries themselves.