@misc{indiciaefa0a49043bfa,
  title = {The main challenges.},
  author = {H E Hussein and A Gezairy},
  year = {1995},
  doi = {10.1111/j.1365-2923.1995.tb02881.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/8992257/},
  note = {Source identifier: 8992257}
}