@article{9576,
  author = {D. Hils and M. McCusker and H. Kleinpoppen and S. Smith},
  title = {Differential and Direct Differential Elastic Scattering Cross Sections for Electrons and Potassium Atoms},
  year = {1972},
  journal = {Physical Review Letters},
  volume = {29},
  pages = {398-401},
  month = {Jan-08-1972},
  issn = {0031-9007},
  doi = {10.1103/PhysRevLett.29.398},
}