(2012) Cadavid Quintero, Alfonso; Abad Restrepo, Ana Cristina; Arango Uribe, María Adelaida; Gómez Rico, Elena María; Muriel Gil, Luisa Fernanda; Uribe, José Ignacio; Ana Cristiba Abad Restreppo (abad@eafit.edu.co); Alfonso Cadavid (alcadavi@eafit.edu.co)