TY - BOOK AU - Agrawal Ramesh kumar AU - Verma V S Gu. 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 - Improved hill determinant method and its application PY - 1994/// CY - Delhi PB - University of Delhi India KW - PHYSICS ER -