Support

The research is supported by the Brazilian foundations:

• FAPESP under Grant 2016/09906-0,
• CNPq under Grant 306136/2017-1,
• CAPES under Grant 23038010617201/33-4.

The project was developed at the Department of Applied Mathematics at the Institute of Bio-science, Letters and Exact Sciences of the State University of São Paulo UNESP.

LLP thanks a research leave from IFMG.