Brown, A.D.; Brown, M. D. (1984). "A geometric method for determining the Huckel molecular orbital energy levels of open chain, fully conjugated molecules". J. Chem. Educ. 61 (9): 770. Bibcode:1984JChEd..61..770B. doi:10.1021/ed061p770.
Murphy, Veronica L.; Kahr, Bart (22 April 2015). "Hückel Theory and Optical Activity". Journal of the American Chemical Society. 137 (15): 5177–5183. doi:10.1021/jacs.5b01763. PMID25798796.
Hansen, Aage E.; Bak, Keld L. (December 2000). "Ab Initio Calculations and Display of Enantiomeric and Nonenantiomeric Anisotropic Circular Dichroism: The Lowest π → π* Excitation in Butadiene, Cyclohexadiene, and Methyl-Substituted Cyclohexadienes †". The Journal of Physical Chemistry A. 104 (48): 11362–11370. Bibcode:2000JPCA..10411362H. doi:10.1021/jp001899+.
Brown, A.D.; Brown, M. D. (1984). "A geometric method for determining the Huckel molecular orbital energy levels of open chain, fully conjugated molecules". J. Chem. Educ. 61 (9): 770. Bibcode:1984JChEd..61..770B. doi:10.1021/ed061p770.
Hansen, Aage E.; Bak, Keld L. (December 2000). "Ab Initio Calculations and Display of Enantiomeric and Nonenantiomeric Anisotropic Circular Dichroism: The Lowest π → π* Excitation in Butadiene, Cyclohexadiene, and Methyl-Substituted Cyclohexadienes †". The Journal of Physical Chemistry A. 104 (48): 11362–11370. Bibcode:2000JPCA..10411362H. doi:10.1021/jp001899+.
Murphy, Veronica L.; Kahr, Bart (22 April 2015). "Hückel Theory and Optical Activity". Journal of the American Chemical Society. 137 (15): 5177–5183. doi:10.1021/jacs.5b01763. PMID25798796.
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P. R. Bunker and P. Jensen (2005),Fundamentals of Molecular Symmetry (CRC Press) Hückel method for benzene: Sections 3.4.3 and 10.2 ISBN0-7503-0941-5[1]