@misc{indiciaeacf3212f1f21,
  title = {"Stalactite" calculus formation.},
  author = {V H Ackerman and E S Smith and L J Pierce},
  year = {1989},
  doi = {10.1016/0030-4220(89)90284-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/2717162/},
  note = {Source identifier: 2717162}
}