Lloberas-Valls J., Benveniste Perez G., Gomis-Bellmunt O. "Life-Cycle Assessment Comparison between 15-MW Second-Generation High temperature Superconductor and Permanent-Magnet Direct-Drive Synchronous Generators for Offshore Wind Energy Applications" IEEE Transactions on Applied Superconductivity 25, 6, pp. - 2015 DOI: 10.1109/TASC.2015.2493121