@misc{indiciae6c8b23c76405,
  title = {Composition and structure of urinary stone.},
  author = {E L Prien},
  year = {1968},
  doi = {10.1016/0002-9343(68)90202-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/4301160/},
  note = {Source identifier: 4301160}
}