L. Wen, Wrolstad, R. E., and Hsu, V. L.,
“Characterization of sinapyl derivatives in pineapple (Ananas comosus [L.] Merill) juice.”,
J Agric Food Chem, vol. 47, no. 3, pp. 850-3, 1999.
T. Ngo, Wrolstad, R. E., and Zhao, Y.,
“Color quality of Oregon strawberries—impact of genotype, composition, and processing”,
Journal of food science, vol. 72, pp. C025–C032, 2007.