The Moon was but the Beginning in "Equilibri", 3/2012 pp. 491-498, DOI: 10.1406/38753 Details € 8,00 Cite
Sustainable Development from Rio 1992 to Rio + 20 in "Equilibri", 1/2012 pp. 57-66, DOI: 10.1406/36825 Details € 8,00 Cite
Access to Energy: A Path Towards Development in "Equilibri", 2/2011 pp. 201-209, DOI: 10.1406/35313 Details € 8,00 Cite