@misc{indiciaeeace92abdac5,
  title = {Complexity and approximability of double digest.},
  author = {Mark Cieliebak and Stephan Eidenbenz and Gerhard J Woeginger},
  year = {2005},
  doi = {10.1142/s0219720005001016},
  url = {https://pubmed.ncbi.nlm.nih.gov/15852501/},
  note = {Source identifier: 15852501}
}