@misc{indiciae6a06d66438a0,
  title = {Should we always keep controlling?},
  author = {F A Nelemans},
  year = {1974},
  doi = {10.1016/0002-8703(74)90183-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/4361470/},
  note = {Source identifier: 4361470}
}