@misc{indiciae3156bc8e5067,
  title = {Black-hole normal modes and quantum anharmonic oscillator.},
  author = {OB Zaslavskii},
  year = {1991},
  doi = {10.1103/physrevd.43.605},
  url = {https://pubmed.ncbi.nlm.nih.gov/10013421/},
  note = {Source identifier: 10013421}
}