Broadley, M. R., O Lochlainn, S., Hammond, J. P., Bowen, H. C., Cakmak, I., Eker, S., Erdem, H., King, G. J. and White, P. J. 2010. Shoot zinc (Zn) concentration varies widely within Brassica oleracea L. and is affected by soil Zn and phosphorus (P) levels. Journal Of Horticultural Science & Biotechnology. 85 (5), pp. 375-380. https://doi.org/10.1080/14620316.2010.11512683
Husain, S., N'tchobo, H., Nguyen-Quoc, B., Kingston-Smith, A. H., Thomas, B. J. and Foyer, C. H. 2003. Changes in activities of acid invertase isoforms affect sugar accumulation and composition during ripening of tomato fruit. Journal Of Horticultural Science & Biotechnology. 78, pp. 182-192.
Free, J. B., Smith, B. D., Stott, K. G. and Williams, I. H. 1974. Pollination of self-fertile apple-trees. Journal Of Horticultural Science & Biotechnology. 49 (3), pp. 301-304. https://doi.org/10.1080/00221589.1974.11514583