Lukatkin, A., S. Eshkina, and N. Osmolovskaya. “Influence of Exogenous Antioxidants on the Generation of Superoxide Anion-Radicals in the Cucumber Leaves under Low Temperature and Cu<sup>2+</sup&gt; Stress”. Biological Communications, no. 4, Dec. 2013, pp. 65–73, https://biocomm.spbu.ru/article/view/1326.