Abbas, A. A., (2010). Study of the possibility of produce textile by sodom apple fibers. Ph.D. Thesis. Textile, Dep., Fac. of Applied Arts, Helwan U.:4-21.
ASAE, (1994).ASAE standards. American Society of Agricultural Engineers. St. Joseph USA.
Barbosa, M. O.; J. S De-almeida-Cortez; A. F. De-Oliveira and S. I. Da-Silva, (2014). Seed oil content and fatty acid Composition from Different Populations of Calotropis procera (Aiton). Journal of the American Oil Chemists' Society 91:1433-1441.
FAO, (1986). Some medicinal plants of Africa and Latin America. FAO Forestry Paper. 67. Rome, Italy.
Ghanem, T. H. and A. K. Zaalouk, (2003). Some physical and mechanical propertiesof Cowpea seeds.Misr J. Ag. Eng., 20(2): 363-379.
Grace, B. S., (2006). The biology of Australian weeds 45. Calotropis procera (Aiton) W.T.Aiton. Plant Protection Quarterly. 21:152–160.
Matthews, J., ( 1991) Progress in Agricultural physics and Engineering. (Hand Book). Chapter (8): 203-227.
Mohsenin, N. N., (1986). Physical Properties of Plant and Animal Materials, Gordon and Breach Sc. Pub., N. Y. p: 734.
Kaleem, F. H.; Z. E. Ismail and G.R. Abd-Hakim, (1993). Factors affecting grain cleaning efficiency. Part1: Grian straw mixture and characteristics, Misr J. Ag. Eng.10(2): 369-382.
Soliman, N. S., (1994). Effect of moisture content on angle of repose of paddy rice and its products. Misr.J. Ag. Eng. 11(1): 163-173.