@misc{indiciae187b7c539ec8,
  title = {Lower bounds on the constituent-quark mass differences.},
  author = {DB Lichtenberg},
  year = {1989},
  doi = {10.1103/physrevd.40.3675},
  url = {https://pubmed.ncbi.nlm.nih.gov/10011748/},
  note = {Source identifier: 10011748}
}