Elmasry, G.; M. Kamruzzaman; D.W. Sun and P. Alle (2012). Principles and applications of hyperspectral imaging in quality evaluation of agro-food products: A review. Critical Reviews in Food Science and Nutrition. 52(11): 999–1023.
Gonzalez-Molina, E.; R. Dominguez-Perles; D.A. Moreno and C. Garcia-Viguera (2010). Natural bioactive compounds of Citrus lemon for food and health. Journal of Pharmaceutical and Biomedical Analysis 51: 327–345.
Hardy, S. and G. Sanderson (2010). Primefacts for profitable, adaptive and sustainable primary industries, Primefact 980: 1-6.
Jafari, A.; A. Fazayeli and M. R. Zarezadeh (2014). Estimation of orange skin thickness based on visual texture coarseness. Department of Agricultural Engineering, Shiraz University, Shiraz 71441-65186, Iran, Biosystems engineering. 117 : 73 - 82.
Khojastehnazhand, M.; M. Omid and A. Tabatabaeefar (2010). Development of a lemon sorting system based on color and size. African J. Plant Sc. 4(4): 122-127.
Milind S. L. (2008) Citrus fruit-biology, technology and evaluation. Academic, New York.
Narendra, V. G. and K. S. Hareesh (2010). Prospects of Computer Vision Automated Grading and Sorting Systems in Agricultural and Food Products for Quality Evaluation. International Journal of Computer Applications. 1(4): 174-181.
Official methods of analysis of (A.O.A.C.) international (2000). Vol. I,Ch. 10 : 1-10.
Omid, M.; M. Khojastehnazhand; A. Tabatabaeefar (2010). Estimating volume and mass of citrus fruits by image processing technique. Journal of Food Engineering. 100: 315–321.
Pathare. P. B.; U. L. Opara and F. A. Al-Said (2013). Colour Measurement and Analysis in Fresh and Processed Foods: A Review, Food Bioprocess Technol. 6:36–60.
Zhang, B.; H. Wenqian; L. Jiangbo; Z. Chunjiang; F. Shuxiang; W. Jitao and L. Chengliang (2014). Principles, developments and applications of computer vision for external quality inspection of fruits and vegetables: A review, Food Research International. 62: 326–343.