On treshold relation & thier application. Baghdad Science Journal, Iraq, Baghdad, v. 3, n. 1, p. 117–123, 2006. DOI: 10.21123/bsj.2006.684. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/684.. Acesso em: 23 jul. 2024.