@misc{indiciae8fabd28203c9,
  title = {[The semi-closed filter circuit].},
  author = {K H Altemeyer and T Fösel and C Wick and J Kilian},
  year = {1985},
  doi = {10.1016/s0750-7658(85)80254-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/4091332/},
  note = {Source identifier: 4091332}
}