[1] Nicola B M, Beullens K, Bobelyn E, et al. Postharvest Biology and Technology, 2007, 46: 99.
[2] Lin H, Ying Y. Sensing and Instrumentation for Food Quality and Safety, 2009, 3: 130.
[4] Chen P, Nattuvetty V R. Transactions of ASAE, 1980, 23(2): 519.
[5] Lammertyn J, Peirs A, Baerdemaeker De J, et al. Postharvest Biology and Technology, 2000, 18: 121.
[6] Qin J, Lu R. Postharvest Biology and Technology, 2008, 49: 355.
[7] Fraser D G, Jordan R B, Kunnemeyer R, et al. Postharvest Biology and Technology, 2003, 27: 185.
[8] Qin J, Lu R. Computers and Electronics in Agriculture, 2009, 68(1): 44.
[10] Baranai L, Zude M. Computer and Electronics in Agriculture, 2009, 69: 33.
[12] Wang W, Li C. Proceedings of SPIE-The International Society for Optical Engineering, v 8369, 2012, Sensing for Agriculture and Food.