Aldo Ferrer and Raúl Prebisch (h/t Marcelo Rougier)
I met him in a few conferences. His book on the economic history of Argentina stands with Celso Furtado's on Brazil and Anibal Pinto's on Chile as a mark of the structuralist, associated with Economic Commission for Latin America (ECLA), interpretation of economic development in the region.
From the Buenos Aires Herald: "Economist and former economy minister Aldo Ferrer has died today at the age of 88. Politically related to the Radical Party, Ferrer earned a vast public service career." Read the obituary here.