Vermeulen, J.F. 2014. “The Application of Multi- and Hyperspectral Remote Sensing Techniques in the Assessment of Stress Factors in Maize Crops”. Suid-Afrikaans Tydskrif Vir Natuurwetenskap En Tegnologie / <i>South African Journal of Science and Technology</I&gt; 33 (1), 1 bladsy. https://doi.org/10.4102/satnt.v33i1.1212.