McGrath, Justin M., Betzelberger, Amy M., Wang, Shaowen, Shook, Eric, Zhu, Xin-Guang, Long, Stephen P., and Ainsworth, Elizabeth A. An analysis of ozone damage to historical maize and soybean yields in the United States. Proceedings of the National Academy of Sciences 112.46 Web. doi:10.1073/pnas.1509777112.

McGrath, Justin M., Betzelberger, Amy M., Wang, Shaowen, Shook, Eric, Zhu, Xin-Guang, Long, Stephen P., & Ainsworth, Elizabeth A. An analysis of ozone damage to historical maize and soybean yields in the United States. Proceedings of the National Academy of Sciences, 112 (46). https://doi.org/10.1073/pnas.1509777112

McGrath, Justin M., Betzelberger, Amy M., Wang, Shaowen, Shook, Eric, Zhu, Xin-Guang, Long, Stephen P., and Ainsworth, Elizabeth A. "An analysis of ozone damage to historical maize and soybean yields in the United States". Proceedings of the National Academy of Sciences 112 (46). United States: Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1509777112. https://par.nsf.gov/biblio/10013570.

@article{osti_10013570,
place = {United States}, title = {An analysis of ozone damage to historical maize and soybean yields in the United States}, url = {https://par.nsf.gov/biblio/10013570}, DOI = {10.1073/pnas.1509777112}, abstractNote = {Not Available}, journal = {Proceedings of the National Academy of Sciences}, volume = {112}, number = {46}, publisher = {Proceedings of the National Academy of Sciences}, author = {McGrath, Justin M. and Betzelberger, Amy M. and Wang, Shaowen and Shook, Eric and Zhu, Xin-Guang and Long, Stephen P. and Ainsworth, Elizabeth A.}, }