Paul, Walter (August 1970). "Review of Synthetic Fiber Ropes"(Report No. AD-A0-84-62-2). US Coast Guard Academy. pp. 41–46. Archived(PDF) from the original on 12 October 2021. Retrieved 21 February 2021.
Paul, Walter (August 1970). "Review of Synthetic Fiber Ropes"(Report No. AD-A0-84-62-2). US Coast Guard Academy. pp. 41–46. Archived(PDF) from the original on 12 October 2021. Retrieved 21 February 2021.