The corresponding research on sustainability and economic efficiency matters is still under development, although concerning a few specific issues Montes et al., 2011; García-Erviti et al., 2015 if compared at international level Badea et al., 2010; Appleby, 2012; Carson and Abbot, 2012; Slaughter, 2013; Ibrahim et al., 2014.
La correspondiente investigación en materia de sostenibilidad y eficiencia económica aún se encuentra desarrollada sin embargo de forma muy puntual Montes et al., 2011; García-Erviti et al., 2015 si es comparada a nivel internacional Badea et al., 2010; Appleby, 2012; Carson y Abbot, 2012; Slaughter, 2013; Ibrahim et al., 2014.