Messmer, Richard P.; Schultz, Peter A. (1987). "The electronic structure of the benzene molecule". Nature. 329 (6139): 492. doi:10.1038/329492a0. S2CID45218186.
Harcourt, Richard D. (1987). "The electronic structure of the benzene molecule". Nature. 329 (6139): 491. doi:10.1038/329491b0. S2CID4268597.
Messmer, Richard P.; Schultz, Peter A. (1987). "The electronic structure of the benzene molecule". Nature. 329 (6139): 492. doi:10.1038/329492a0. S2CID45218186.
Harcourt, Richard D. (1987). "The electronic structure of the benzene molecule". Nature. 329 (6139): 491. doi:10.1038/329491b0. S2CID4268597.