@online{cisco_cleaning,
  title = "Inspection and Cleaning Procedures for Fiber-Optic Connections",
  url  = "https://www.cisco.com/c/en/us/support/docs/optical/synchronous-digital-hierarchy-sdh/51834-cleanfiber2.html",
}

@online{chemtronics_cleaning,
  title = "How To Clean and How Not to Clean Fiber Optic Connectors",
  url  = "https://www.chemtronics.com/how-to-clean-and-how-not-to-clean-fiber-optic-connectors",
}

@online{occ_cleaning,
  title="Inspection and Cleaning Procedure",
  url="https://www.occfiber.com/wp-content/uploads/2017/03/Fiber-Optic-Connector-Inspection-and-Cleaning-Procedure_pp-10.pdf",
}

@online{optcore_cleaning,
  title="How to Clean Fiber Optic Cable Connectors",
  url="https://www.optcore.net/fiber-optic-cleaning-guide/",
}