@misc{indiciaed8a759776e0f,
  title = {Quenched approximation in the quark model.},
  author = {P Geiger and N Isgur},
  year = {1990},
  doi = {10.1103/physrevd.41.1595},
  url = {https://pubmed.ncbi.nlm.nih.gov/10012515/},
  note = {Source identifier: 10012515}
}