Winkler, B. and V. Milman (1998). "Structure and properties of supercubane from density functional calculations." Chemical Physics Letters 293(3-4): 284-288.

The structure and properties of supercubane have been calculated within density functional theory. The cohesive energy of supercubane is calculated to be larger than that of BC-8-carbon at ambient pressure. Supercubane would not be a high-density polymorph, as at ambient pressure its density is only 2.9 g/cm(3). The structural parameters obtained for supercubane are discussed and shown to be consistent with experimental data for molecular cubane compounds.

http://dx.doi.org/10.1016/s0009-2614(98)00762-3