@misc{indiciae89c2b8279471,
  title = {Lanthanide ions activate alpha-amylase.},
  author = {D W Darnall and E R Birnbaum},
  year = {1973},
  doi = {10.1021/bi00742a021},
  url = {https://pubmed.ncbi.nlm.nih.gov/4354371/},
  note = {Source identifier: 4354371}
}