@article{huang_1974, title={Electronic circumference meter for continuous monitoring of plant and fruit growth}, volume={17}, number={3}, journal={Transactions of the ASAE}, author={Huang, B. K.}, year={1974}, pages={493} }
 @article{huang_chang_1974, title={Plant response to changes in light intensity and air temperature}, volume={17}, number={5}, journal={Transactions of the ASAE}, author={Huang, B. K. and Chang, C. S.}, year={1974}, pages={826} }