@misc{indiciaeb6f750bbd16e,
  title = {[OVS-System. 4-year study completed].},
  author = {A E Bronsdijk and J H van der Veen},
  year = {1988},
  url = {https://pubmed.ncbi.nlm.nih.gov/3165880/},
  note = {Source identifier: 3165880}
}