1. Hehre, W. J.; Lathan, W. A.; Ditchfield, R.; Newton; Pople, J. A. Gaussian 70. Quantum Chemistry Program Exchange: Program No. 237; 1970.
2. Inhomogeneous Electron Gas
3. Self-Consistent Equations Including Exchange and Correlation Effects
4. Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Gill, P. M. W.; Johnson, B. G.; Wong, M. W.; Foresman, J. B.; Robb, M. A.; Head-Gordon, M.; Replogle, E. S.; Gomperts, R.; Andres, J. L.; Raghavachari, K.; Binkley, J. S.; Gonzalez, C.; Martin, R. L.; Fox, D. J.; Defrees, D. J.; Baker, J.; Stewart, J. J. P.; Pople, J. A. Gaussian 92/DFT; Gaussian, Inc.: Pittsburgh, PA, 1993.