Lu, Y., Zhu, Z. P., Su, D. S., Wang, D., Liu, Z. Y., & Schlögl, R. (2004). Formation of bamboo-shaped carbon nanotubes by controlled rapid decomposition of picric acid. Carbon, 42(15), 3199-3207. Retrieved from http://dx.doi.org/10.1016/j.carbon.2004.08.003.