@misc{indiciaef32af7690953,
  title = {Polyanionic hydrogel as a gastric retentive system.},
  author = {S H Leung and B K Irons and J R Robinson},
  year = {1993},
  doi = {10.1163/156856293x00140},
  url = {https://pubmed.ncbi.nlm.nih.gov/8241064/},
  note = {Source identifier: 8241064}
}