Mata, TM; Martins, AA; Costa, CAV.. 2000. "Eco-Efficiency Indicators and Environmental Management Systems as Complimentary Tools". Trabalho apresentado em Proceedings of the Euroconference Quality of Life, Sustainability, Environmental Changes (Event 3): Present and Future Measures to Achieve Sustainability on International and Local Levels, 27-30 April 2000, Stadtschlaining (Austria), 75-85.
Proceedings article published in 2000 by
Antonio Augusto Areosa Martins 
