TY  - BOOK
AU  - Pandey Rakesh Kumar
AU  -  Supervisor : Dr. R.P. Saxena
AU  -  Supervisor : Dr. V. S. Varma
AU  - University of Delhi. Faculty of Science. Department of Physics and Astrophysics
ED  - University of Delhi. Faculty of Science. Department of Physics and Astrophysics
TI  - Study of discontinuities in energy spectra and perturbation theory
PY  - 1989///
KW  - PHYSICS
ER  -