I. Augšpole, G. Putniece, G. Bundzēna, and R. Sanžarevska, “WINFOLIA FLAG LEAF ANALYSIS OF WINTER WHEAT (TRITICUM AESTIVUM L.) AND EVALUATION OF GRAIN QUALITY INDICATORS”, ETR, vol. 1, pp. 61–65, Jun. 2024, doi: 10.17770/etr2024vol1.7955.