@misc{indiciae35b7ad7b3416,
  title = {Three-roton bound states.},
  author = {DS Hirashima and T Yamashita and F Iwamoto},
  year = {1989},
  doi = {10.1103/physrevb.40.10891},
  url = {https://pubmed.ncbi.nlm.nih.gov/9991650/},
  note = {Source identifier: 9991650}
}