Dahl, J.P.; Springborg, M. (1988). «The Morse Oscillator in Position Space, Momentum Space, and Phase Space». J. Chem. Phys. 88: 4535. Bibcode:1988JChPh..88.4535D. doi:10.1063/1.453761
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Dahl, J.P.; Springborg, M. (1988). «The Morse Oscillator in Position Space, Momentum Space, and Phase Space». J. Chem. Phys. 88: 4535. Bibcode:1988JChPh..88.4535D. doi:10.1063/1.453761