Zambrano-Rengel, G. E., and D. R. Acosta. “icrostructure and haracterization of PI L 2 ipeline teel amples”. Acta Microscopica 19, no. 1 (January 29, 2010): 60-68. ccessed January 15, 2025. https://acta-microscopica.org/acta/article/view/470.