SENGUL , SULEYMAN, and K. HALILOGLU. “Determination of Mineral Concentration and Cell-Wall Energy Content of Some Alfalfa Cultivars and Genotypes (Medicago Sativa L)”. Asian Journal of Chemistry, vol. 20, no. 4, Mar. 2010, pp. 3231-40, https://asianpubs.org/index.php/ajchem/article/view/12636.