The Effect of Mass Ratio of Ferrocene to Camphor as Carbon Source and Reaction Time on the Growth of Carbon NanotubesPraswasti Pembangun Dyah Kencana Wulan and Nur Safitrah SetiawatiE3S Web Conf., 67 (2018) 03037DOI: https://doi.org/10.1051/e3sconf/20186703037