Paldus, J.; Čížek, J.; Shavitt, I. (1972). "Correlation problems in atomic and molecular systems. IV. Extended coupled-pair many-electron theory and its applications to the BH3 molecule". Phys. Rev. A. 5 (1): 50–67. Bibcode:1972PhRvA...5...50P. doi:10.1103/PhysRevA.5.50.
Paldus, J. (1974). "Group theoretical approach to the configuration interaction and perturbation theory calculations of atomic and molecular systems". J. Chem. Phys. 61 (12): 5321–5330. Bibcode:1974JChPh..61.5321P. doi:10.1063/1.1681883.
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Paldus, J.; Čížek, J.; Shavitt, I. (1972). "Correlation problems in atomic and molecular systems. IV. Extended coupled-pair many-electron theory and its applications to the BH3 molecule". Phys. Rev. A. 5 (1): 50–67. Bibcode:1972PhRvA...5...50P. doi:10.1103/PhysRevA.5.50.
Paldus, J. (1974). "Group theoretical approach to the configuration interaction and perturbation theory calculations of atomic and molecular systems". J. Chem. Phys. 61 (12): 5321–5330. Bibcode:1974JChPh..61.5321P. doi:10.1063/1.1681883.
