1. Eng A. H., Ong E. L. Hevea natural rubber, in Plastics Engineering: Handbook of Elastomers, Bhowmick, A.K. and Stephens, H.L., Eds., New York: Marcel Dekker, 2000, vol. 61, pp. 29–59.
2. McIntyre, D., Stephens, H.L., Schloman, W.W., Jr., and Bhowmick, A.K., Guayule rubber, in Plastics Engineering: Handbook of Elastomers, Bhowmick, A.K. and Stephens, H.L., Eds., New York: Marcel Dekker, 2000, vol. 61, pp. 1–27.
3. Puskas, J.E., Producers and world market of synthetic rubbers, in Biopolymers, Polyisoprenoids, Koyama, E. and Steinbuchel, A., Eds., Weinheim: Wiley, 2001, vol. 2, pp. 287–320.
4. Cornish, K., Hypoallergenic natural rubber products from Parthenium argentatum (gray) and other non-Hevea brasiliensis species, US Patent nos. 5580942, 1996; 5717050, 1998.
5. Nyburg, S.C., Acta Crystallogr., 1954, vol. 7, pp. 385–392.