Baritelle A.L., Hyde, G.M., Thornton, R. and Bajema, R. 2000. A classification system for impact-related defects in potato tubers, American J. Potato Res.77(3): 143-148.
Bentini, M., Caprara, C. and Martelli, R. 2006. Harvesting damage to potato tubers by analysis of impacts recorded with an instrumented sphere. Biosystems Engineering. 94(1): 75-85.
Bishop, C. F. H. and Maunder, W. 1980. Potato Mechanization and Storage. First publication. Farming press LTD. 97-130.
Hemmat, A. and Taki, O. 2001. Potato losses and mechanical damage by potato diggers in Fereidan’s region of Isfahan. J. Sci.Technol. Agric. Natur. Resour. 5(2): 195-209. (in Persian)
Khater, I. M. M. 2009. Effect of working speeds of mechanical harvesting on potato damage in south eastern Qantara. 4th Conference on Recent Technology in Agriculture. 3-5 Nov. Cario, Giza, Egypt.
Kong, W. S. and Halderson, J. L. 1991. A vibratory two-row potato digger. Applied Engineering in Agriculture. 7(6): 683-687.
McRae, D.C. 1980. Mechanical damage to potatoes by harvesting and handling. Ann. Appl. Biol. 96, 360-363.
Ministry of Agriculture Jihad. 2015. Crop production yearbook (2013-2014). Department of Planning and Economy. (in Persian)
Mousazadeh, H., Mobli, H. and Zaefizadeh, M. 2006. A determination of potato tuber mechanical damage due to impacts of three harvesting machines, and their comparison, Ardebil area. Iranian J. Agric Sci. 37(5): 911-918. (in Persian)
Peters, R. 1996. Damage of potato tubers, a review. Potato Research. 39, 479-484.
Peterson, C.L., Thornton, R.E. and Smittle, D.A. 1975. Potato harvester evaluations. Transactions of the ASAE. 18(2): 240-245.
Rezaee, A. and Soltani, A. 1996. Introduction to Potato Production. Jahad-e Daneshgahi Mashhad Publications. 145. (in Persian)
Srivastava, A. K., Goreing, C. R. and Rohrbach, R. P. 1993. Engineering Principles of Agricultural Machines. Published by the American Society of Agricultural Engineers.
Thornton, R.E., Hyde, G.W., Thornton, R.K. and Hammond, M.W. 1985. Chain speed adjustment to obtain low tuber damage at harvest. ASAEPaper No. 85: 1141.
Valueva, T. I. 1975. Effect of weather and soil conditions and degree of ripeness of potato tubers on resistance to mechanical damage. Nauchnye Trudy, Institute Kartofel'nogo. Khozyaistva. 24, 124-130.