APA

Pandey Rakesh Kumar, University of Delhi. Faculty of Science. Department of Physics and Astrophysics, Supervisor : Dr. R.P. Saxena, Supervisor : Dr. V. S. Varma & University of Delhi. Faculty of Science. Department of Physics and Astrophysics. (1989). Study of discontinuities in energy spectra and perturbation theory. : .

Chicago

Pandey Rakesh Kumar, University of Delhi. Faculty of Science. Department of Physics and Astrophysics, Supervisor : Dr. R.P. Saxena, Supervisor : Dr. V. S. Varma and University of Delhi. Faculty of Science. Department of Physics and Astrophysics. 1989. Study of discontinuities in energy spectra and perturbation theory. : .

Harvard

Pandey Rakesh Kumar, University of Delhi. Faculty of Science. Department of Physics and Astrophysics, Supervisor : Dr. R.P. Saxena, Supervisor : Dr. V. S. Varma and University of Delhi. Faculty of Science. Department of Physics and Astrophysics. (1989). Study of discontinuities in energy spectra and perturbation theory. : .

MLA

Pandey Rakesh Kumar, University of Delhi. Faculty of Science. Department of Physics and Astrophysics, Supervisor : Dr. R.P. Saxena, Supervisor : Dr. V. S. Varma and University of Delhi. Faculty of Science. Department of Physics and Astrophysics. Study of discontinuities in energy spectra and perturbation theory. : . 1989.