@misc{indiciae39595d970ec6,
  title = {Reference methods as a basis for accurate measuring systems.},
  author = {J Büttner},
  year = {1991},
  doi = {10.1515/cclm.1991.29.4.223},
  url = {https://pubmed.ncbi.nlm.nih.gov/1868127/},
  note = {Source identifier: 1868127}
}