Adeleye, E. O., Ayeni, L. S. and Ojeniyi, S. O. (2010). Effect of Poultry Manure on Soil Physico-Chemical Properties, Leaf Nutrient Contents and Yield of Yam (DioscoreaRotundata) on Alfisolin Southwestern Nigeria. Journal of American Science, 6(10), 871-878.
ANSI Standards, Transmission Roller Chains and Sprocket Teeth.(1975). ANSI, B29.1.
ASAE Standards, Agricultural Machinery Management Data. (2000). Joseph, MI: ASAE, D497. 4.
County, V. F. W. (1971).U.S. Patent No. 3,602,404. Washington, DC: U.S. Patent and Trademark Office.
Duhovnik, J., Benedicic, J. and Bernik, R. (2004). Analysis and design parameters for inclined rotors used for manure dispersal on broadcast spreaders for solid manure. Transactions of the ASAE, 48(5), 1389-1404.
Fares, A., Abbas, F., Ahmad, A., Deenik, J. L. and Safeeq, M. (2008). Response of Selected Soil Physical and Hydrologic Properties to Manure Amendment Rates, Levels, and Types. Soil Science, 173(8), 522-533.
Goering, C. E. (1992). Engine and tractor power (3rd ed.). American Society of Agricultural Engineers (ASAE).
Johnson, R. A. (1940). U.S. Patent No. 2,202,858. Washington, DC: U.S. Patent and Trademark Office.
Lague, C., Landry, H., and Roberge, M. (2005). Engineering of land application systems for livestock manure: A Review. Canadian Biosystems Engineering, 47 (6).
Li, S. T. and Liu, R. L. (2006). Establishment and Evaluation for Maximum Permissible Concentrations of Heavy Metals in Biosolid Wastes as Organic Manure.
Journal of Agro-Environment Science, 25, 777-782.
Mansouri-Rad, D. (2009). Farm Machinery and Tractors. (15th ed.). Bu-Ali Sina University. (Chapter 19). (In Farsi)
Meyer, D. A., and Meyer, L. (1996). U.S. Patent No. 5,501,404. Washington, DC: U.S. Patent and Trademark Office.
Peeters, K. J., Wilke, G. L., and Landon, G. L. (2011).U.S. Patent No. 7,871,024. Washington, DC: U.S. Patent and Trademark Office.
Popa, L., Pirna, I., Nedelcu, A., and Ciuperca, R. (2009). Spreading Machine of 5 Tons Capacity, MG-5. Research Journal of Agricultural Science, 41(2), 489-493.
Richard, G. B., and Keith, J. B. (2011). Shigley's mechanical engineering design. Tata McGraw-Hill Education. (Chapter 17)
Ross, E. P. (1905). U.S. Patent No. 787,401. Washington, DC: U.S. Patent and Trademark Office.
Sadin, A., Aghkhani, M. H., and Abbaspourfard, M. H. (2009). Design of manure gathering machine. Journal of Agricultural Sciences and Natural Resources, 16(1), 194-202. (In Farsi)
Savci, S. (2012). Investigation of Effect of Chemical Fertilizers on Environment. APCBEE Procedia, 1, 287-292.
Srivastava, A. K., Goering, C. E., and Rohrbach, R. P. (2006). Engineering principles of agricultural machines. (2nd ed.). American society of agricultural engineers.
Uzoma, K. C., Inoue, M., Andry, H., Fujimaki, H., Zahoor, A. and Nishihara, E. (2011). Effect of Cow Manure Biochar on Maize Productivity Under Sandy Soil Condition. Soil use and management, 27(2), 205-212.
Whitely, W. N., and Whitely Jr, W. N. (1911). U.S. Patent No. 982,330. Washington, DC: U.S. Patent and Trademark Office.