Referências bibliográficas
Odum H.T., Environmental Accounting. Emergy and Environmental Decision Making. John Wiley, New York, 1996. 369p.
Ulgiati S., Odum H.T. e Bastianoni S., Emergy analysis, environmental loading e sustainability. An emergy analysis of Italy. Ecological Modelling, 1994. 73, 215-268.