@misc{indiciaeabeaacfeaecc,
  title = {Composite, large spirochetes from microbial mats: spirochete structure review},
  author = {Margulis, L. and Ashen, J. B. and Sole, M. and Guerrero, R.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/20050000440},
  note = {Source identifier: 20050000440}
}