Serrano Moya, Edgard David, Carmen Dussán Lubert, and Oliverio Ramírez Garzón. 2012. “Profit and Investment Rate, an Analysis for Industry in Caldas and the Metropolitan Area of Manizales, 1985-2001”. Eleuthera 6 (-):206-27. https://revistasojs.ucaldas.edu.co/index.php/eleuthera/article/view/5096.