@misc{indiciaedf4a884fcf51,
  title = {[Ivoclar-SR-Isosit-Spectra bonding system. Comparison study].},
  author = {K Ludwig},
  year = {1989},
  url = {https://pubmed.ncbi.nlm.nih.gov/2680649/},
  note = {Source identifier: 2680649}
}