@misc{indiciae235e308e12c1,
  title = {Demographic waves and labor resources.},
  author = {E M Bubnova},
  year = {1986},
  doi = {10.2753/pet1061-1991290361},
  url = {https://pubmed.ncbi.nlm.nih.gov/12280488/},
  note = {Source identifier: 12280488}
}