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Tong, B.Y. (1962) On Huby’s Rules for Non-Degenerate Rayleigh-Schrodinger Perturbation Theory in Any Order. Proceedings of the Physical Society (London), 80, 1101-1104.
http://dx.doi.org/10.1088/0370-1328/80/5/308

has been cited by the following article:

• TITLE: Circular Scale of Time as a Way of Calculating the Quantum-Mechanical Perturbation Energy Given by the Schrödinger Method

  AUTHORS: Stanisław Olszewski

  KEYWORDS: Quantum-Mechanical Perturbation Energy, Circular Scale of Time

  JOURNAL NAME: Journal of Quantum Information Science, Vol.4 No.4, December 30, 2014

  ABSTRACT: The Schrodinger perturbation energy for an arbitrary order N of the perturbation has been presented with the aid of a circular scale of time. The method is of a recurrent character and developed for a non-degenerate quantum state. It allows one to reduce the inflation of terms necessary to calculate known from the Feynman’s diagrammatical approach to a number below that applied in the original Schrodinger perturbation theory.