Gupta, D. K., S. Singh, L. N. Sharma, and V. P. Agrawal. 2009. “Group Theoretical Treatment of Substituted Saturated Fullerenes (C20H20-NXn)”. Journal of Nepal Chemical Society 23 (July): 43-44. https://doi.org/10.3126/jncs.v23i0.2095.