@misc{indiciaefac59efd62db,
  title = {Perspectives for the future.},
  author = {E F Mammen},
  year = {1993},
  doi = {10.1007/bf01738947},
  url = {https://pubmed.ncbi.nlm.nih.gov/8227736/},
  note = {Source identifier: 8227736}
}