Giraldo Velásquez, C.M., Valderrama Castañeda, A.S. and Zapata Aguirre, S. 2015. Airport infrastructures: forms of ownership and the relationship with efficiency. Revista Ingenierías Universidad de Medellín. 14, 27 (Nov. 2015), 179-194. DOI:https://doi.org/10.22395/rium.v14n27a11.