1. Beltratti, A., G. Chichilnisky and G. M. Heal. “Sustainable growth and the green golden rule”, in Approaches to Sustainable Economic Development, Ian Goldin and Alan Winters (eds.), Paris, Cambridge University Press for the OECD, 1993, pp. 147–172.
2. Beltratti, A., G. Chichilnisky and G. M. Heal. “The Environment and the Long Run: A Comparison of Different Criteria”, Ricerche Economiche 48, 1994, 319–340.
3. Beltratti, A., G. Chichilnisky and G. M. Heal. “The Green Golden Rule”, Economics Letters 49, 1995, 175–179.
4. Benaïm, M. and M. W. Hirsch. “Asymptotic Pseudotrajectories, Chain Recurrent Flows and Stochastic Approximations”, Working Paper, Department of Mathematics, University of California at Berkeley, 1994.
5. Berry, S., G. M. Heal and P. Salomon. “On the Relation between Economic and Thermodynamic Concepts of Efficiency in Resource Use”, Resources and Enerrry 1, 1978, 125–137. (also reprinted in [16]).