“…parametric techniques in the form of SFA (Baños-Piño et al 1999;Coto-Millán, Baños-Pino, and Rodríguez-Álvarez 2000;Barros 2005;Rodríguez-Álvarez, Tovar, and Trujillo 2007;Trujillo and Tovar 2007;González and Trujillo 2008;Díaz-Hernández, Martínez-Budría, and Jara-Díaz 2008;Coto-Millán, Pesquera, and Castanedo 2010;Ramos-Real and Tovar 2010;Rodríguez-Álvarez, Tovar, and Wall 2011;Núñez-Sánchez and Coto-Millán 2012;Rodríguez-Álvarez and Tovar 2012;Tovar and Wall 2015) and non-parametric techniques such as DEA (Martinez-Budria et al 1999;Bonilla et al 2002;Barros 2003;Bonilla et al 2004;Barros and Athanassiou 2004;Inglada and Coto-Millán 2010;Carvalho et al 2010;Medal and Sala 2011;Carvalho and Marques 2012;Medal-Bartual, Molinos-Senante, and Sala-Garrido 2012;Díaz-Hernández, Martínez-Budría, and Salazar-González 2014;Gutiérrez et al 2015).…”