Xi Chen Chen, X., & Davis, W. R. (2009). Delay analysis and design exploration for 3D SRAM. 2009 IEEE International Conference on 3d Systems Integration, 244–247. https://doi.org/10.1109/3dic.2009.5306558 Chen, X., Yang, W. Q., Sivamani, E., Bruneau, A. H., Wang, B. H., & Qu, R. D. (2005). Selective elimination of perennial ryegrass by activation of a pro-herbicide through engineering E-coli argE gene. MOLECULAR BREEDING, 15(4), 339–347. https://doi.org/10.1007/s11032-004-7243-z