Mulliken, R. (1928). "Electronic States and Band Spectrum Structure in Diatomic Molecules. VII. P2→S2 and S2→P2 Transitions". Physical Review. 32 (3): 388–416. Bibcode:1928PhRv...32..388M. doi:10.1103/PhysRev.32.388.
Shaik, S.; Rzepa, H. S.; Hoffmann, R. (2013). "One Molecule, Two Atoms, Three Views, Four Bonds?". Angew. Chem. Int. Ed. 52 (10): 3020–3033. doi:10.1002/anie.201208206. PMID23362052.
Bock, H.; Mollere, P. D. (1974). "Photoelectron spectra. An experimental approach to teaching molecular orbital models". Journal of Chemical Education. 51 (8): 506. Bibcode:1974JChEd..51..506B. doi:10.1021/ed051p506.
Laing, Michael (1987). "No rabbit ears on water. The structure of the water molecule: What should we tell the students?". Journal of Chemical Education. 64 (2): 124. Bibcode:1987JChEd..64..124L. doi:10.1021/ed064p124.
Mulliken, R. (1928). "Electronic States and Band Spectrum Structure in Diatomic Molecules. VII. P2→S2 and S2→P2 Transitions". Physical Review. 32 (3): 388–416. Bibcode:1928PhRv...32..388M. doi:10.1103/PhysRev.32.388.
Bock, H.; Mollere, P. D. (1974). "Photoelectron spectra. An experimental approach to teaching molecular orbital models". Journal of Chemical Education. 51 (8): 506. Bibcode:1974JChEd..51..506B. doi:10.1021/ed051p506.
Laing, Michael (1987). "No rabbit ears on water. The structure of the water molecule: What should we tell the students?". Journal of Chemical Education. 64 (2): 124. Bibcode:1987JChEd..64..124L. doi:10.1021/ed064p124.
Shaik, S.; Rzepa, H. S.; Hoffmann, R. (2013). "One Molecule, Two Atoms, Three Views, Four Bonds?". Angew. Chem. Int. Ed. 52 (10): 3020–3033. doi:10.1002/anie.201208206. PMID23362052.