Its formal name honors Joaquim AmÃ rico GuimarÃ # es , a former chairman of Internacional-PR , which was a football club that merged with AmÃ rica-PR . This merger formed AtlÃ tico Paranaense . Its formal name honors Joaquim AmÃ rico GuimarÃ # es , a former chairman of Internacional-PR , which was a football club that merged with AmÃ rica-PR , thus forming AtlÃ tico Paranaense .