
[https://www.elsevier.com/books/carbon-nanotubes-and-carbon-nanofibers-in-concrete-advantages-and-potential-risks/cwirzen/978-0-323-85856-4]
[https://www.elsevier.com/books/carbon-nanotubes-and-carbon-nanofibers-in-concrete-advantages-and-potential-risks/cwirzen/978-0-323-85856-4]