@misc{indiciaeedd1bd89508d,
  title = {Particles, superparticles, and twistors.},
  author = {AK Bengtsson and I Bengtsson and M Cederwall and N Linden},
  year = {1987},
  doi = {10.1103/physrevd.36.1766},
  url = {https://pubmed.ncbi.nlm.nih.gov/9958360/},
  note = {Source identifier: 9958360}
}