@misc{indiciaea08a26b26332,
  title = {The Singapore system.},
  author = {L Tan},
  year = {1998},
  doi = {10.1016/s1076-6332(98)80365-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/9750865/},
  note = {Source identifier: 9750865}
}