@misc{indiciae74ebec7bec79,
  title = {[The productive sector].},
  author = {Encarna Santolaria and Alberto Fernández and Antonio Daponte and I Aguilera},
  year = {2004},
  doi = {10.1157/13062247},
  url = {https://pubmed.ncbi.nlm.nih.gov/15171854/},
  note = {Source identifier: 15171854}
}