1. Department of Forest Engineering, Universidade Federal de Sao Joao del-Rei, Sao Joao del Rei 36307-352, Brazil
2. Department of Forest Engineering, Universidade Federal de Vicosa, Vicosa 36570-900, Brazil
3. Department of Forest Engineering, Universidade Federal Rural da Amazônia, Belem 68650-000, Brazil
4. Department of Forest Engineering, Universidade Federal de Minas Gerais, Belo Horizonte 39404-547, Brazil