Soni, P. (1996). Energy and environmental challenges in Central Asia and the Caucasus: windows for cooperation: Conference on possible areas of cooperation in energy and related fields between Central Asia, the Caucasus and other Asian countries. New-Delhi: Tata Energy Research Institute.

Soni, P. Energy and Environmental Challenges in Central Asia and the Caucasus: Windows for Cooperation: Conference On Possible Areas of Cooperation in Energy and Related Fields between Central Asia, the Caucasus and Other Asian Countries. New-Delhi: Tata Energy Research Institute, 1996.

Soni, P. Energy and Environmental Challenges in Central Asia and the Caucasus: Windows for Cooperation: Conference On Possible Areas of Cooperation in Energy and Related Fields between Central Asia, the Caucasus and Other Asian Countries. New-Delhi: Tata Energy Research Institute, 1996.