1. Yoshida,Z., Kobayashi,T.: J. chem. Physics 54, 4538 (1971) (in press). (Title: The Variable Integrals Method II).
2. - - Submitted to: Bull chem. Soc. Japan (Title: Electronic Spectra of Nitrocyclopentadienide Anion and Formylcyclopentadienide Anion); Yamada,H.: Submitted to: Bull. chem. Soc. Japan (Title: Electronic Spectra of Nitropyrroles); - - Submitted to: Bull. chem. Soc. Japan (Title: SCFMO Calculations of Some Fulvenes and Fulvalenes with the Variable Integrals Methods).
3. Mulliken,R.S.: J. Amer. chem. Soc. 72, 600 (1950); J. physic. Chem. 56, 801 (1952).
4. Dewar,M.J.S., Lepley,A.R.: J. Amer. chem. Soc. 83, 4560 (1961).
5. Fukui,K., Imamura,A., Yonezawa,T., Nagata,C.: Bull. chem. Soc. Japan 34, 1076 (1961); 35, 33 (1962).