[1] Billy E Warrick, Travis D Miller. Texas Agricultural Extension Service, SCS-1999-15, 9.
[2] Rebbeck M, Knell G. In: Reuter D, Ed. Managing Frost Risk: A Guide for Southern Australian Grains. South Australian Research and Development Institute and Grains Research and Development Corporation, Canberra, Australia, 2007.
[3] Whaley J M, Kirby E J M, Spink J H, et al. Eur. J. Agron., 2004, 21(1): 105.
[6] Colombo R, Meroni M, Marchesi A, et al. Remote Sens. Environ., 2008. 112(4): 1820.
[7] Zhang J C, Pu R L, Huang W J, et al. Field Crop. Res., 2012, 134: 165.
[8] Miller J R, Hare E W, Wu J. International Journal of Remote Sensing, 1998, 11(10): 1755.
[9] M A, Skidmore A K. Remote Sensing of Environment, 2006, 101(2): 181.