1. Appel, H.M., 1994. The chewing herbivore gut lumen: physicochemical conditions and their impact on plant nutrients, allelochemicals, and insect pathogens. In: Bernays, E.A. (Ed.), Insect–Plant Interactions, Vol. 5. CRC Press, Boca Raton, FL, pp. 209–23.
2. The influence of host plant on gut conditions of gypsy moth (Lymantria dispar) caterpillars;Appel;Journal of Insect Physiology,1995
3. Gut redox conditions in herbivorous lepidopteran larvae;Appel;Journal of Chemical Ecology,1990
4. Reassessment of the roles of peritrophic envelope and hydrolysis in protecting polyphagous grasshoppers from ingested hydrolyzable tannins;Barbehenn;Journal of Chemical Ecology,1996
5. Adaptive significance of midgut pH in larval Lepidoptera;Berenbaum;American Naturalist,1980