Browsing by Author "Florez Guzman, Mario Heimer"
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Item Electronic billing in Colombia, Brazil and Chile: analysis of its procedures and conditioning aspects(Pontifícia Universidade Católica de São Paulo - PUC/SP) Hernandez Aros, Ludivia; Martínez Romo, Karen Sofía; León Galvis, María Alejandra; Florez Guzman, Mario Heimer