Brouwer, C. K. Prins and M. Heibloem (1989) "Irrigation water management: Irrigation scheduling" FAO training manual No. 4 Rome Italy.
Burrows,W.C and Don Kirkham (1958) "Measurement of field capacity with a neutron meter" Soil Sci. Soc. Am. J 22:103-105.
De Boodt, M. and P. Demeester (1968), A comparative study on the acuray of the radioactive method for soil moisture determination using thermal and epithermal neutron. Trans. Intern. Congr. Soil Sci., 9th Congr. Adelade. Vol.3.pp.555-564.
El- Gendy, R. W. (2008): Use of Neutron Probe to Quantify the Soil Moisture Flux in Layers of Cultivated Soil by Chickpea. Arab J. of Nuclear Sci. and Appl published in 9th conference of nuclear sciences and applications at sharm el shikh, 11-14 , February, 2008 Part 13: Soil and Water Research. PP: 26-35).
El- Gendy, R. W. (2008): "How to use tensiometers and neutron scattering technique to study rates of stored and depleted water into soil layers" Ninth Arab Conference on the Peaceful Uses of Atomic Energy, Beirut,.Vol. 2, P: 117 -127.
Feng-Xin Wang., Yaohu Kang., Shi-Ping Iiu and Xiao-Yan Hou (2007) "Effects of soil matric potential on potato growth under drip irrigation in the North China Plain" Agricultural water management 88: 34-42.
Hanson, B., Orloff, Ssnd Peters, D., (2000). "Monitoring soil moisture helps refine irrigation management" California Agriculture 54 (3), 38–42
IAEA (2003) "Neutron and gamma probe: Their use in agronomy" Training course series 16 Vienna.
Jacobs. H.S., R. M. Reed; S.J. Thien and L.V. Withee (1971). Soils laboratory exercise source book. Am. Soc. of Agron. Mandison, Wisconsin.
Juan Enciso ., Bob Wiedenfeld., John Jifon and Shad Nelson (2009) " Oinion yield and quality response to two irrigation scheduling strategies" Scientia Horticulture 120: 301-305.
Mateen ul Hassan Khan ; Mohammad Imran and Tahir Hussain Chattha (2005) " Effect of irrigation intervals on growth and yield of onion varieties Swat-1 and phulkara" Journals of Applied Science Research 1(2): 112-116
Page, D.(1982). Method of soil analysis, Part 12 2nd . ed., Agronomy Monogr. ASA and SSSA., Madison, WI. Page, D. (ed).
Sallam, M.F.A and R. W. El-Gendy (1999). "Detecting active root depth using soil water movement direction by nuclear technique". Egypt. J. Soil Sci. 39No 127.43
Zedan A.T. (2005) "Study of soil moisture and salt distribution under drip irrigation system using the neutron scattering meter. M.Sc thesis I.A.M Bari, Italy