Hai, Luong Nhu, et al. “Study on the Effect of Carbon Black, Carbon Nanotube on the Properties of Rubber Blend Acrylonitrile Butadiene Rubber (NBR) Polyvinyl Chloride (PVC)”. <i>Vietnam Journal of Chemistry</i>, vol. 55, no. 5, Oct. 2017, p. 627, doi:10.15625/2525-2321.2017-00520.