@misc{indiciaeac73afb449b8,
  title = {Single and dual axis tracking as a function of system dynamics.},
  author = {P N Ziegler},
  year = {1968},
  doi = {10.1177/001872086801000310},
  url = {https://pubmed.ncbi.nlm.nih.gov/5674364/},
  note = {Source identifier: 5674364}
}