13. Reference:

https://www.atomate.com/technology/

https://www.raymor.com/?OVRAW=nanotube&OVKEY=nanotube&OVMTC=content

https://www.physorg.com/news894.html

https://www.crnano.org/

https://www.qtechnano.com/

https://www.nanoxtals.com/

https://www.nanovip.com/directory/Nanotubes/index.php

https://www.zyvex.com/nanotech/compNano.html

prepared by suba at anandsoft.com