//-->
Journal of economic and social measurement
(1985)
Overview of sustainable development indicators used by national and international agencies
Hass, Julie L., (2003)
Technology responses to global environmental challenges : energy collaboration for the 21st century ; Kyoto, Japan, 6th - 8th November 1991 ; conference proceedings
(1994)
Energiepolitische Tiefenprüfung der Bundesrepublik Deutschland
Russian energy prices, taxes and costs : 1993