Zhang, L. et al. 2014. Effects of Paraquat-induced oxidative stress on antioxidants and Chlorophyll Fluorescence in stay-green wheat (Triticum aestivum L.) flag leaves. Bangladesh Journal of Botany. 42, 2 (Feb. 2014), 239–245. DOI:https://doi.org/10.3329/bjb.v42i2.18025.