@misc{indiciae5239b2adac4b,
  title = {Productivity and collaborative patterns of physical educators.},
  author = {A Knoppers},
  year = {1989},
  doi = {10.1080/02701367.1989.10607431},
  url = {https://pubmed.ncbi.nlm.nih.gov/2489837/},
  note = {Source identifier: 2489837}
}