GUPTA, R. . Smart Ticket Machine: STM. Mathematical Statistician and Engineering Applications, [S. l.], v. 70, n. 2, p. 1776 –, 2021. DOI: 10.17762/msea.v70i2.2470. Disponível em: https://www.philstat.org/index.php/MSEA/article/view/2470. Acesso em: 12 may. 2024.