Huang, Yanbo, Ruixiu Sui, Steven J. Thomson, and Daniel K. Fisher. 2013. “Estimation of Cotton Yield With Varied Irrigation and Nitrogen Treatments Using Aerial Multispectral Imagery”. International Journal of Agricultural and Biological Engineering 6 (2):37-41. https://www.ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/706.