@misc{indiciaeab1c12088145,
  title = {Solution to the neutrino-mass problem in superstring E6 theory.},
  author = {S Nandi and U Sarkar},
  year = {1986},
  doi = {10.1103/physrevlett.56.564},
  url = {https://pubmed.ncbi.nlm.nih.gov/10033227/},
  note = {Source identifier: 10033227}
}