@misc{indiciaee96fab40072c,
  title = {Major and trace elements in spruce needles by NAA.},
  author = {A Wyttenbach and S Bajo and L Tobler},
  doi = {10.1007/bf02992674},
  url = {https://pubmed.ncbi.nlm.nih.gov/1704721/},
  note = {Source identifier: 1704721}
}