@article{el-khoreiby_unrath_lehman_1990, title={Paclobutrazol spray timing influences apple tree growth}, volume={25}, number={3}, journal={HortScience}, author={El-Khoreiby, A. M. and Unrath, C. R. and Lehman, L. J.}, year={1990}, pages={310} }
 @article{el-khoreiby_lehman_unrath_1989, title={Adjuvant addition increases paclobutrazol spray efficacy on 'Delicious' apple}, volume={24}, number={6}, journal={HortScience}, author={El-Khoreiby, A. M. and Lehman, L. J. and Unrath, C. R.}, year={1989}, pages={1037} }