Abou-Bakr, H., Helmi, N., El Hussieni, M., & Ramadan, R. H. 1991: Interactions Between Insects and Certain Pest Control Factors in an Aquatic Ecosystem. I. Toxicity of Five Herbicides Used in Rice Fields to Different Stages of Culex pipiens L. - Beiträge Zur Entomologie = Contributions to Entomology 41(1): 287–292 - doi: 10.21248/contrib.entomol.41.1.287-292