1. The Basics on Bonded Sandwich Construction, Hexcel Corp. TSB 124 (1986), pp. 12–17
2. Boark’s Formulas for Stress and Strain, 6th ed., ed. Warren C. Young (New York: McGraw-Hill, 1989), pp. 458–476.
3. Sandwich Constructions and Core Materials: General Test Methods, MTL-STD-401B, U.S. Dept. of Defense (1967).
4. Mechanical Properties of Hexcel Honeycomb Materials, Hexcel Corp. TSB 120 (1987), pp. 14–22.
5. Honeycomb Panels and Core, Eldim, Inc. Technical Bulletin (1989).