Nagy, Péter Tamás. “Fertilisation Effect on Quantity of 0.01 M CaCl2 Soluble N-Forms in a Long-Term-Small-Plot Experiment”. Acta Agraria Debreceniensis, no. 10 (May 11, 2003): 166–170. Accessed July 31, 2021. https://ojs.lib.unideb.hu/actaagrar/article/view/3488.