Afzalinia, S., Solhjou, A. A. and Eskandari, I. (2011). Effects of subsoiling on some soil properties and wheat yield in a dry land ecological condition. Journal of Agricultural Science and Technology, A1: 842-847.
Al- Adawi., S. S. and Reeder,R. C. (1996). Compaction and Subsoiling effects on corn and soybean yields and soil physical properties. Transactions of the ASAE, 39(5): 1641- 1649.
Almassi, M., Borghei, S. A. M. and Habibi-Asl, J.(2002). Effect of winged and regular subsoilers on some physical conditions of soil under sugercan in south of Khoozestan. Agricultural Science, 11 (4): 77-81.
Altamore, R. E.,Torres, R. F., Lavado,R. S.and Gimenz, J. E. (1983). Effect of subsoiling on a saline-sodic soil in western Buenos Aires. Ciencia- del- suelo, 1: 1, 45- 51.
Armstrong, A. (1991). Drainage research for salinity control. Proceeding of Official Development Assistance (ODA) workshop, UK. 32- 42.
Armstrong, A. S. B., Pearce, G. R., Rycroft, D. W. and Taton, T. W. (1990). Field testing of a new reclamation technique for saline clay soils. ProceedingSymposium Land Drainage for salinity control in arid and semiarid Regions, No. 2, 89- 101.
ASAE. (1995). Soil cone Penetrometer. ASAE Standard S313. 2. Agricultural Engineering Year Book, P. 683.
Baver, L. D. (1968). Soil Physics. John Wiley and Son. Publication. New York. U.S.A.
Grevers, M. C. J. and Jong, E. D. (1993). Soil structure and crop yeild over a 5 year period following subsoiling a solonetzic and chernozemic soil in Saskatchewan. Canadian Journal Soil Science, 73(1): 89- 91.
Hadas, A. (1994). Soil compaction caused by high axle loads- review of concepts and experimental data. Soil and Tillage Research, (29): 253- 276.
Hamza, M. A. and Anderson, W. K. (2005). Soil compaction in cropping systems. A review of the nature, causes and possible solutions. Soil and Tillage Research, 82: 121-145.
Kogo, K., Lamsal, K., Salokhe, V. M. and Singh, G.(ed) (1992). Effect of subsoil management on soil physical properties and plant growth in Bankok clay. International Agricultural Conference Proceeding, Held in Bankok, Thailand, 960-963.
Molnar, I., Jenovai, Z. and Vukovic, R. (1988). Effect of drainage, subsoiling and conventional tillage on yield of some important field crops on hydromorphic soils. Arhiv- Za – Poljoprivredne- Nauke, 49(176): 256- 280.
Perumpral, J. V. (1987). Cone penetrometer applications: a review. Transaction of the ASAE, 30(4): 939- 944.
Raghavan, G. S. V., Mckyes,E., Gendrom,G., Borghum,B. and Lee,H. H.(1978). Effect of the soil compaction on the development and yield of corn (Maize). Canadian Journal Plant Science, 58: 435-443.
Soane, B. D. and Van Quwerkerk, C. (1994). Soil compaction in crop production. Elsevier, P. 662.
Solhjou, A. A., Dehghanian, A., Sepaskhah, A. and Joukar, L. (2009). Effects of deep tillage and irrigation regimes on sugarbeet yield in Iran. The 2009 CIGR International Symposium of the Australian Society for Engineering in Agriculture, Brisbane, Australia, 13-16 September 2009.
Solhjou, A. A. and Niazi. J. (2001). Effect of subsoiling on soil physical properties and irrigation wheat yield. Iranian Journal of Agricultural Engineering Research, 7, 65-78 (In Farsi).
Solhjou, A. A. and Loghavi.A. (2000). Optimum moisture content for determination of cone index, with Cone Penetrometer. Iranian Journal of Agricultural Engineering Research, 17: 43-50(In Farsi).
Tanji, K. K. (1990). Nature and extent of agricultural salinity. American Society Civil Engineers, No 71, ASCE.
Unger, P. W. and Kaspar, T. C. (1994). Soil compaction and root growth: a review. Agronomy Journal, 86: 759-766.
Van Qenuchten, M, T. and Hoffman, G. I. (1984). Analysis of crop salt tolerance data. PP. 263- 271. In: I. Shainberg and J. Shalhevet (Eds.), Soil Salting under Irrigation- Process and Management. Spring Verlay Publication, New York.
Winter, S. R. (1983). Efficient deep tillage for sugarbeet on pulman clay loam. Journal of the AmericanSociety Sugar Beet Technology, 22(1): 29-33.