Ferreira, W. S.
Moreira, E.
Frazão, N. F.
Funding for this research was provided by:
Fundação de Amparo à Pesquisa do Estado do Maranhão (Project No. 287/14, 2584/14, 3022/14, 798/16)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Project No. 1099-11-3)
Article History
Received: 28 August 2017
First Online: 15 February 2018