@misc{indiciae5a86be89e023,
  title = {[A method for determining urea by using immobilized urease].},
  author = {I P Ivanov and S I Danev and Ch D Palashev and D G Dimitrov},
  year = {1990},
  url = {https://pubmed.ncbi.nlm.nih.gov/1691334/},
  note = {Source identifier: 1691334}
}