1. The lowest natural frequency of circular arcs;Den Hortog;Philosophical Magazine, Series 7,1928
2. Natural frequencies of circular arches;Wolf;J. Struct. Div., ASCE,1971
3. Diffraction of shock waves around various obstacles;Uhlenbeck,1950
4. Design of structures to resist nuclear weapon effect;ASCE,1985
5. Blast resistant design of an aircraft pen structure;Lakshmanan,1987