Karthikeyan M, Jayakumar V, Radhika K, Bhaskaran R, Velazhahan R, Alice D (December 2005). "Induction of resistance in host against the infection of leaf blight pathogen (Alternaria palandui) in onion (Allium cepa var aggregatum)". Indian Journal of Biochemistry & Biophysics. 42 (6): 371–7. PMID16955738.