@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{seltmann_sheets_campbell_quick_1989, title={Chemical residues and agronomic characteristics of flue-cured tobacco after applications of 2,4-D and dicamba}, volume={191}, number={22}, journal={Tobacco International}, author={Seltmann, H. and Sheets, T. J. and Campbell, C. R. and Quick, F. E.}, year={1989}, pages={59} }
 @article{seltmann_1974, title={EFFECT OF LIGHT PERIODS AND TEMPERATURES ON PLANT FORM OF NICOTIANA-TABACUM L CV HICKS}, volume={135}, ISSN={["0006-8071"]}, DOI={10.1086/336752}, abstractNote={Light/dark temperatures of 30/30, 30/15, 15/30, and 15/15 C resulted in four plant forms of Nicotiana tabacum L. cv. Hicks in both 9 and 15 hr of high-intensity light. Plants in the 30/30 C temperatures were similarly tall in both light periods with many leaves (38.5; 34.7) which were correspondingly large but more ovate in the 15 hr of light. Plants in the 15/15 C temperatures were similarly very spindly in form with reduced numbers of leaves (19.0; 24.5), each with a prominent petiole and very acute leaf tip. The characteristics were more extreme in an acropetal direction with the upper leaves being very lanceolate. Plants in the 30/15 and 15/30 C temperatures were intermediate in form, with the exception of those in 15/30 C and 9 hr of light. These plants were relatively short but had 38.7 leaves that were yellowish green in color. It required 117 days for flowering in plants receiving 9 hr of light and only 92 in plants receiving 15 at the 15/30 C temperatures. Results indicate that night temperature along with the length of the high-intensity light period determines the number of leaves formed.}, number={3}, journal={BOTANICAL GAZETTE}, author={SELTMANN, H}, year={1974}, pages={196–200} }