Caballero, C., López-Olguín, J., Ruiz, M., Ortego, F. and Castañera, P. (2008) “Antifeedant activity and effects of terpenoids on detoxication enzymes of the beet armyworm, Spodoptera exigua (Hübner)”, Spanish Journal of Agricultural Research, 6(S1), pp. 177-184. doi: 10.5424/sjar/200806S1-386.