@inproceedings{mckeand_zobel_byram_huber_2007, title={Southern pine tree improvement--a living success story}, booktitle={Proceedings of the 29th Southern Forest Tree Improvement Conference}, author={McKeand, S. E. and Zobel, B. J. and Byram, T. D. and Huber, D. A.}, year={2007}, pages={3–7} }
 @book{zobel_sprague_1998, title={Juvenile wood in forest trees}, ISBN={3540640320}, publisher={Berlin; New York: Springer}, author={Zobel, B. J. and Sprague, J. R.}, year={1998} }
 @article{zobel_1992, title={Silvicultural effects on wood properties}, number={2}, journal={IPEF International}, author={Zobel, B.}, year={1992}, pages={31} }
 @article{zobel_1985, title={Juvenile wood in tropical forest plantations: Its characteristics and effect on the final product}, number={2}, journal={CAMCORE Bulletin on Tropical Forestry}, author={Zobel, B. J.}, year={1985}, pages={17} }