KOVÁR, Marek et al. Plant nitrogen monitoring by hyperspectral reflectance imaging of wheat leaves. In FLEX 2017 - Remonte sensing of fluorescence, photosynthesis and vegetation status. 1st ed. online (70 s.) Remonte sensing of fluorescence, photosynthesis and vegetation status. Paríž : European space agency, 2017, s. 47, online. Available on Internet:<http://esaconferencebureau.com/docs/default-source/flex-docs/abstract-book.pdf?sfvrsn=0>