INVESTIGATION OF TWISTED TAPE TURBULATOR FOR FIRE TUBE BOILER Part I. Heat Transfer. Journal of Engineering, [S. l.], v. 17, n. 04, p. 694–713, 2011. DOI: 10.31026/j.eng.2011.04.06. Disponível em: https://www.joe.uobaghdad.edu.iq/index.php/main/article/view/2965. Acesso em: 25 apr. 2025.