1. NTSB, "NTSB aircraft accident report", NTSB AAR-96/01 https://www.ntsb.gov/investigations/AccidentReports/Reports/AAR9601.pdf https://ntrs.nasa.gov/api/citations/20070034950/downloads/20070034950.pdf
2. RTO"Ice Accretion Simulation Evaluation Test", RTO Technical report 38.,2001 https://www.sto.nato.int/publications/STO%20Technical%20Reports/RTO-TR-038/TR-038-$$ALL.pdf