Stols, E. and Berner, J. 2012. Ozone leads to an increase of hydrogen peroxide levels and peroxidase activity in two maize varieties. Suid-Afrikaans Tydskrif vir Natuurwetenskap en Tegnologie / <i>South African Journal of Science and Technology</i&gt;. 31, 1 (May 2012), 1 bladsy. DOI:https://doi.org/10.4102/satnt.v31i1.300.