@misc{indiciae7261587d3f06,
  title = {Access systems of heavy construction vehicles: Parameters, problems and pointers.},
  author = {D B Couch and T M Fraser},
  year = {1981},
  doi = {10.1016/0003-6870(81)90177-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/15676403/},
  note = {Source identifier: 15676403}
}