@article{gibson_williams_whipker_nelson_dole_cleveland_walls_2007, title={Foliar symptomology and tissue concentrations of nutrient-deficient vegetative strawflower plants}, volume={38}, DOI={10.1080/00103620701588379}, number={17-18}, journal={Communications in Soil Science and Plant Analysis}, author={Gibson, J. L. and Williams, A. and Whipker, B. E. and Nelson, P. V. and Dole, J. M. and Cleveland, B. and Walls, F. R.}, year={2007}, pages={2279–2294} }