JMIR Preprints (later published in the Interactive Journal of Medical Research ).
Airworthiness Directive 78 FR 49660 is a technical document regarding safety standards for Hamilton Standard and Hamilton Sundstrand Corporation propellers. 49660 rar
If you let me know which of these fields you are studying, I can provide a detailed or key citations from that specific paper. JMIR Preprints (later published in the Interactive Journal