TY  - RPRT
TI  - Perturbed ladder-operator method: An algebraic recursive solution of the perturbed Morse-oscillator eigenequation.
AU  - N Bessis
AU  - G Bessis
PY  - 1994
DO  - 10.1103/physreva.50.4506
UR  - https://pubmed.ncbi.nlm.nih.gov/9911449/
ID  - 9911449
ER  -