@misc{indiciae1b7c07b40da0,
  title = {Optical absorption in semiconducting quantum-well structures: Indirect interband transitions.},
  author = {HH Hassan and HN Spector},
  year = {1986},
  doi = {10.1103/physrevb.33.5456},
  url = {https://pubmed.ncbi.nlm.nih.gov/9939049/},
  note = {Source identifier: 9939049}
}