1. Mixed-integer nonlinear optimisation in process synthesis;Adjiman,1998
2. Socio-ecological indicators for sustainability;Azar;Ecological Economics,1996
3. Bengtsson, M., Lundin, M., & Molander, S. (1997). Life cycle assessment of wastewater systems, case studies on conventional treatment, urine sorting and liquid composting in three Swedish municipalities. Technical Environmental Planning, report 1997:9, Göteberg, Sweden, ISSN 1400-9560
4. Bergh, J. C. J. M. van den, Straaten, J. van der (Eds.) (1994). Towards sustainable development, concepts, methods, and policy. International Society for Ecological Economics. Island Press, Washington DC and Covelo California, ISBN 1559633492
5. Biegler, L. T., Grossmann, I. E., Westerberg, A. W. (1997). Systematic methods of chemical process design. New Jersey: Prentice Hall PTR, ISBN 0-13-49422-3