« The Decline of the Copper Industry in Chile and the Entrance of North American Capital, 1870-1916”, par Joanne Fox Przeworski Ayer Publishing, 1980 [1]
Ores and Industry in South America, par Harry Foster Bain et Thomas Thornton Read, page 225 [2]
Manuel Pino (professeur d'American Indian Studies au Scottsdale Community College, 20 years after CHERNOBYL, Southwest Research and Information Center, 2006
