Hamann, F. A., A. Fiebig, and G. Noga. 2020. “Impact of Nitrogen Fertilization on Chlorophyll Content and Yield of Barley Cultivars Assessed by Fluorescence-Based Approaches”. Canadian Journal of Agriculture and Crops 5 (2):138-52. https://doi.org/10.20448/803.5.2.138.152.