%0 Journal Article %A A. V. Kudinov %A M. A. Smondyrev %T Quantum-mechanical oscillator with arbitrary anharmonicity: $1/N$ Expansion and perturbation theory %J Teoretičeskaâ i matematičeskaâ fizika %D 1983 %P 357-367 %V 56 %N 3 %U http://geodesic.mathdoc.fr/item/TMF_1983_56_3_a3/ %G ru %F TMF_1983_56_3_a3