1. Honey Bees (Hymenoptera: Apidae) Contaminated with Pesticides and Polychlorinated Biphenyls
2. BECKER, G (1987) Organohalogen, organophosphorous and triazine (S8).InTheir, H; Zeumer, H (eds)Manual of pesticide residue analysis.Volume I. Verlagsgesellschaft; Germany; pp 283–295.
3. GNUBINGE, G (1988)Proceedings of a meeting of the EC-Experts group; Udine, Italy; Council of the European Communities; pp 365–368.