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Romeis, J and Shanower, T G and Zebitz, C P W (1997) Acceptance and suitability of ultraviolet-irradiated Helicoverpa armigera (Hühner) (Lep., Noctuidae) eggs for Trichogramma chilonis Ishii (Hym., Trichogrammatidae). Journal of Applied Entomology, 121 (1-5). pp. 441-446. ISSN 1439-0418