R.D. Firn
Jones, Clive G., and R.D. Firn. 1991. “On The Evolution Of Plant Secondary Chemical Diversity”. Phil. Trans. Royal Society, London, Uk. B. 333: 273-280. http://www.caryinstitute.org/reprints/Jones-Firn_1991.pdf.
Jones, Clive G., and R.D. Firn. 1991. “On The Evolution Of Plant Secondary Chemical Diversity [Book Chapter]”. In W. G. Chaloner, J. L. Harper, And J. H. Lawton (Eds.). The Evolutionary Interaction Of Animals And Plants, 97-104. The Royal Society, London. University Press, Cambridge. http://www.caryinstitute.org/reprints/Jones-Firn_1991.pdf.