@article{5045, author = {B. Marinkovic and Ping Wang and Alan Gallagher}, title = {Threshold electron excitation of Na}, year = {1992}, journal = {Physical Review A}, volume = {46}, pages = {2553-2557}, month = {Jan-09-1992}, issn = {1050-2947}, doi = {10.1103/PhysRevA.46.2553}, }