Department of Forest Science;
Federal University of Lavras;
PO Box: 3037;
Lavras;
MG 37200-000;
Brazil;
Department of Statistics;
State University of Maringa;
Av. Colombo 5.790;
Jd. Universitario;
Bloco E90;
Maringa;
PR 87020-900;
Brazil;
Department of Statistics;
Federal University of Lavras PO Box: 3037;
Lavras;
MG 37200-000;
Brazil;