Lili Sun Shuwei Tang Yingfei Chang Zhanliang Wang Rongshun Wang Searching for stable hept-C<sub>62</sub>X<sub>2</sub> (X = F, Cl, and Br): Structures and stabilities of heptagon-containing C<sub>62</sub> halogenated derivatives. 2631-2635 2008 29 Journal of Computational Chemistry 16 http://dx.doi.org/10.1002/jcc.21017 db/journals/jcc/jcc29.html#SunTCWW08