P. E. Mason and J. W. Brady (2007). ""Tetrahedrality" and the Relationship between Collective Structure and Radial Distribution Functions in Liquid Water". J. Phys. Chem. B. ج. 111 ع. 20: 5669–5679. DOI:10.1021/jp068581n.
Wiberg، Kenneth B. (1984). "Inverted geometries at carbon". Acc. Chem. Res. ج. 17 ع. 11: 379–386. DOI:10.1021/ar00107a001.
Joseph P. Kenny, Karl M. Krueger, Jonathan C. Rienstra-Kiracofe, and Henry F. Schaefer III (2001). "C5H4: Pyramidane and Its Low-Lying Isomers". J. Phys. Chem. A. ج. 105 ع. 32: 7745–7750. DOI:10.1021/jp011642r.{{استشهاد بدورية محكمة}}: صيانة الاستشهاد: أسماء متعددة: قائمة المؤلفين (link)
Lewars E. (1998). "Pyramidane: an ab initio study of the C5H4 potential energy surface". Journal of Molecular Structure: THEOCHEM. ج. 423 ع. 3: 173–188. DOI:10.1016/S0166-1280(97)00118-8.