Nagy, P. T., J. Lazányi, J. Loch, I. Kincses, and A. Balláné Kovács. “Effect of Fertilization on the Potentially Mineralize N Forms of Soil of Long Term Field Experiment Was Set in an Acidic Sandy Soil”. Acta Agraria Debreceniensis, no. 27, Nov. 2007, pp. 20-24, doi:10.34101/actaagrar/27/3094.