1. A porous block model for cancellous bones;McElhaney,1970
2. Mechanical properties of cranial bone;McElhaney;J. Biomech.,1970
3. Analysis and Design of Structural Sandwich Panels;Allen,1969
4. Minimum weight sandwich beam design;Huang;AIAA J.,1974
5. Least weight of a sandwich panel;Ueng,1979