@misc{long_seltmann_barnhardt_1999, title={Apparatus and method for simultaneously topping and applying a precision application of sucker control chemicals to tobacco and other row crops}, volume={5,987,862}, number={1999 Nov. 23}, publisher={Washington, DC: U.S. Patent and Trademark Office}, author={Long, R. C. and Seltmann, H. and Barnhardt, R. W.}, year={1999} }
 @article{wilcox_weissinger_long_fitzmaurice_mirkov_swaisgood_1997, title={Production and purification of an active bovine lysozyme in tobacco (Nicotiana tabacum): utilization of value-added crop plants traditionally grown under intensive agriculture}, volume={45}, DOI={10.1021/jf970156r}, number={7}, journal={Journal of Agricultural and Food Chemistry}, author={Wilcox, C. P. and Weissinger, A. K. and Long, R. C. and Fitzmaurice, L. C. and Mirkov, T. E. and Swaisgood, H. E.}, year={1997}, pages={2793–2797} }
 @misc{long_1993, title={Automated apparatus for removing transplant size seedlings}, volume={5,209,305}, number={1993 May 11}, publisher={Washington, DC: U.S. Patent and Trademark Office}, author={Long, R. C.}, year={1993} }
 @article{long_weybrew_woltz_dunn_1974, title={Effects of 2-chloroethylphosphonic acid on the development and maturation of flue-cured tobacco}, volume={176}, number={12}, journal={Tobacco International}, author={Long, R. C. and Weybrew, J. A. and Woltz, W. G. and Dunn, C. A.}, year={1974}, pages={63} }