Funding for this research was provided by:
Coordenação Aperfeiçoamento do Pessoal Docente
Companhia Eletrica de Minas Gerais
Fundação de Amparo à Pesquisa do Estado de Minas Gerais
German Science Foundation (GR1540/20-1/21-1)
Article History
Received: 15 December 2017
Revised: 28 April 2018
Accepted: 14 May 2018
First Online: 23 May 2018