Heydari, S. , , Allahyari, H. , , Farhadi, R. , and Fattah-al-hosseini, S. . "The Effect of Temperature on Prey Preference of Adults and Fourth Instar Larvae of Hippodamia variegata (Col: Coccinellidae) on Two Aphid Species, Aphis fabae and Acyrthosiphon pisum (Hem: Aphididae)", Iranian Journal of Plant Protection Science, 42, 1, 2011, 95-102.