@article{10090,
  author = {J. Doll and William Reinhardt},
  title = {Analytical evaluation of 1-matrices, a generalization of the Kato perturbation technique},
  year = {1975},
  journal = {The Journal of Chemical Physics},
  volume = {62},
  pages = {2003},
  month = {Jan-01-1975},
  issn = {00219606},
  doi = {10.1063/1.430656},
}