JÓNÁS, Tamás. Sigmoid functions in reliability based management. Periodica Polytechnica Social and Management Sciences, [S. l.], v. 15, n. 2, p. 67–72, 2007. 10.3311/pp.so.2007-2.04. Disponível em: https://pp.bme.hu/so/article/view/1626. Acesso em: 2 may. 2024.