¹R. Sobjak, ²C. L. Bazzi, ³K. Schenatto, ⁴W. K. Oliveira, ⁵A. E. Menegasso

1. Computer Science Department. Federal of Technology University of Paraná. Medianeira, Paraná state. B
2. Technological Federal University of Parana
3. Federal University of Technology - Paraná
4. Federal University of Technology – Paraná /UTFPR - Computer Science Department, Av. Brazil, 4232 - 8
5. Federal University of Technology – Paraná /UTFPR - Computer Science Department, Av. Brazil, 4232 - 85884-000 - Medianeira, PR – Brazil