Models of molecular geometry, Gillespie R. J., Robinson E.A. Chem. Soc. Rev., 2005, 34, 396–407, doi: 10.1039/b405359c
Core Distortions and Geometries of the Difluorides and Dihydrides of Ca, Sr, and Ba Bytheway I, Gillespie R.J, Tang T.H., Bader R.F. Inorganic Chemistry, 34,9, 2407–2414, 1995 doi:10.1021/ic00113a023
Power, Philip P. Silicon, germanium, tin and lead analogues of acetylenes. Chem. Commun. September 2003, (17): 2091–2101. PMID 13678155. doi:10.1039/B212224C.
Nagase, Shigeru; Kobayashi, Kaoru; Takagi, Nozomi. Triple bonds between heavier Group 14 elements. A theoretical approach. J. Organomet. Chem. 6 October 2000, 11 (1–2): 264–271. doi:10.1016/S0022-328X(00)00489-7.
Baran, E (2000). "Mean amplitudes of vibration of the pentagonal pyramidal XeOF5− and IOF52− anions". Journal of Fluorine Chemistry101: 61. doi:10.1016/S0022-1139(99)00194-3.
Power, Philip P. Silicon, germanium, tin and lead analogues of acetylenes. Chem. Commun. September 2003, (17): 2091–2101. PMID 13678155. doi:10.1039/B212224C.