Abstract
Florianópolis/Wuppertal 2017 these past four years, my research objective, my bibliographic reference, and the focus of my investigation were deeply remodeled. Nonetheless, during the past four years, I was the one who changed the most. Many people accompanied such a change and contributed to make this research possible. I begin by thanking my first supervisor, Professor Dr. Salomão Ribas Gomez for his comprehension, patience, kindness, and support. For the appreciated example of a remarkable
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