SPUTO, Thomas. A Technical Note: Comparison of Design Specifications for Design of Pipe and Round HSS Pedestrian Guardrail Systems. Engineering Journal, [S. l.], v. 39, n. 2, p. 86–90, 2002. DOI: 10.62913/engj.v39i2.775. Disponível em: https://ej.aisc.org/index.php/engj/article/view/775. Acesso em: 12 feb. 2025.