Meena, R., S. Sharma, and S. Singh. “Studies on Variability in Alternaria Alternata (Kessler) Causing Leaf Blight of Isabgol (Plantago Ovata)”. SAARC Journal of Agriculture, vol. 12, no. 2, Feb. 2015, pp. 63-70, doi:10.3329/sja.v12i2.21918.