Wiley, International Journal of Quantum Chemistry, 4-5(70), p. 1055-1066, 1998
DOI: 10.1002/(sici)1097-461x(1998)70:4/5<1055::aid-qua53>3.0.co;2-0
Wiley, International Journal of Quantum Chemistry, 45(70), p. 1055-1066
DOI: 10.1002/(sici)1097-461x(1998)70:4/5<1055::aid-qua53>3.3.co;2-y
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