Juhász, E. K., and A. Balláné Kovács. “The Effect of Sulphur and Nitrogen Supply on the Growth and Nutrient Content of Spring Wheat (Triticum Aestivum L.)”. Acta Agraria Debreceniensis, no. 74, June 2018, pp. 65-70, doi:10.34101/actaagrar/74/1666.