Xianhu Zha, Shuang Li, Ruiqin Zhang and Zijing Lin. (2014). Remarkable Thermal Contraction in Small Size Single-Walled Boron Nanotubes.
            <i>Communications in Computational Physics</i>. <i>16</i> (1).
            201-212.
         doi:10.4208/cicp.230913.201113a