• American Concrete Institute (ACI). 1997. Standard practice for design and construction of concrete silos and stacking tubes for storing granular materials. ACI Code No. 313. American Concrete Institute, Farmington Hills, MI.
  • ASABE. 2001. Loads exerted by free-flowing grain on bins. ANSI/ASAE EP 433. American Society of Agricultural and Biological Engineers, St. Joseph, MI.
  • Bates, E. N. 1925. Estimating the quantity of grain in bins. United States Department of Agriculture, Miscellaneous Circular No. 41.
  • Ergun, S. 1952. Fluid flow through packed columns. Chem. Eng. Prog. 48:8994.
  • Haque, E. 2011. Void fraction as a function of depth and pressure drops of packed beds of porous media formed by granular material. Trans. Am. Soc. Agric. Biol. Eng. 54:22392243.
  • Janssen, H. A. 1895. Versuche uber Getreidedruck in Silozellen. Zeitschr. D. Vereines Deutscher Ingenieure 39:10451049.
  • Loewer, O. J., I. J. Ross, D. D. Kratzer, and J. N. Walker. 1977. Properties of ground shelled corn as related to forces in bulk storage structures. Trans. ASAE. 20:155156.
  • Malm, J. K., and L. F. Backer. 1985. Compaction factors for six crops. Trans. ASAE. 28:16341636.
  • Roberts, A. W. 2000. 100 years of Janssen. in Silos, hoppers, bins & domes. Part IV. Trans Tech Publications, Germany.
  • Ross, I. J., T. C. Bridges, O. J. Loewer, and J. N. Walker. 1979. Grain bin loads as affected by grain moisture content and vertical pressure. Trans. ASAE. 22:592597.
  • Shedd, C. K. 1953. Resistance of grains and seeds to airflow. Agric. Eng. 34:616619.
  • Thompson, S. A., and I. J. Ross. 1983. Compressibility and frictional coefficients of wheat. Trans. ASAE. 26:11711176, 1180.
  • Thompson, S. A., S. G. McNeill, I. J. Ross, and T. C. Bridges. 1987. Packing factors of whole grains in storage structures. Appl. Eng. Agric. 3:215221.
  • Thompson, S. A., S. G. McNeill, I. J. Ross, and T. C. Bridges. 1990. Computer model for predicting the packing factors of whole grains in flat storage structures. Appl. Eng. Agric. 6:465470.
  • Thompson, S. A., C. V. Schwab, and I. J. Ross. 1991. Calibration of a model for packing whole grains. Appl. Eng. Agric. 7:450456.