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- [42] UNRESTRICTED HARTREE-FOCK FUNCTIONS FOR THE CARBON AND FLUORINE-ATOMS THEORETICA CHIMICA ACTA, 1981, 58 (02): : 155 - 162
- [43] SPIN CONTAMINATION IN PPP UNRESTRICTED HARTREE-FOCK WAVE FUNCTIONS THEORETICA CHIMICA ACTA, 1969, 13 (05): : 428 - &