1. American Society of Agricultural Engineering, 2006. ASAE standard, Compression test of food material of convex shape. ASAE S368.4 DEC2000 (R2006).
2. ANSYS Help System, 2004. Analysis Guide & Theory Reference. Ver 8.
3. Mechanics of Materials;Beer,1985
4. Nonlinear Finite Elements for Continua and Structures;Belytschko,2000
5. Commercial Watermelon Production: Culture;Boyhan,2000