@misc{indiciae204d8299202c,
  title = {Angle dependent total cross sections and the optical theorem.},
  author = {T V Levitina and E J Brändas},
  year = {2003},
  doi = {10.1016/s0097-8485(02)00057-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/12927118/},
  note = {Source identifier: 12927118}
}