1. The inducible formation and stability of nitrate reductase in higher plants;Afridi;J. Exp. Bot.,1964
2. The relation of iron supply to the tissue concentration of iron chlorophyll and catalase in barley plants grown in sand culture;Agarwala;Physiol. Plant.,1961
3. Visible symptoms and chemical analysis vs. biochemical indicators as a means of diagnosing iron and manganese deficiencies in citrus plants;Bar-Akiva,1964
4. Possible use of the nitrate reductase activity as a measure of the nitrogen requirement of citrus trees;Bar-Akiva;Plant Cell Physiol.,1965
5. Peroxidase activity as an indicator of the iron requirement of citrus plants;Bar-Akiva;Isr. J. Agric. Res.,1968