@ARTICLE{El-Shahawy_Tarek_Abd_El-Ghafar_Chemicals_2015,
 author={El-Shahawy, Tarek Abd El-Ghafar},
 volume={vol. 55},
 number={No 3},
 journal={Journal of Plant Protection Research},
 howpublished={online},
 year={2015},
 publisher={Committee of Plant Protection PAS},
 publisher={Institute of Plant Protection – National Research Institute},
 title={Chemicals with a natural reference for controlling water hyacinth, Eichhornia crassipes (Mart.) Solms},
 URL={http://journals.pan.pl/Content/89668/PDF/JPPR_55(3)_09_El-Shahawy.pdf},
 doi={10.1515/jppr-2015-0041},
}