1. Eckhardt, M. K.“Titanium Tubing”, DSSV Engineering Report, Lock–Missile and Space Co., report no. LMSC–D177821–6, Navy contract N00024–70–0254, 30 June 1971.
2. Williams, W. L. “Marine Applications of Titanium”, The Science, Technology and Application of Titanium, Editors Dr. R. Jaffee and N. Promisel, Pergamon Press, New York 1970.
3. Litvin, D.A. and Smith, D.E., “Titanium for Marine Applications”, Naval Engineers Journal, Vol. 83, No. 5, October 1971, PP.37–44.
4. Government Specification MIL-F-18280C, Fittings, Flareless Tube, Fluid Connections, 27 June 1969.
5. Government Specification MIL-F-21467D (SHIPS), Fittings, Flare-less, Fluid Connections, 22 April 1969.