Virág, István Csaba, et al. “Effects of Nitrogen Rates and Boron-Containing Biostimulant Application on Sunflower (Helianthus Annuus L.) Yield and Physiological Responses under Drought Conditions”. Acta Agraria Debreceniensis, no. 1, June 2026, pp. 93-98, https://doi.org/10.34101/actaagrar/1/16782.