THAMRIN, I.; K, N. Shape and Long Pipe Spiral Effect for the Temperature and Efficiency in Mini Boiler. Journal of Mechanical Science and Engineering, [S. l.], v. 3, n. 2, p. 019–022, 2020. DOI: 10.36706/jmse.v3i2.23. Disponível em: https://jmse.ejournal.unsri.ac.id/index.php/jmse/article/view/23. Acesso em: 19 sep. 2024.