Inga A. Zasada Zasada, I. A., Linker, H. M., & Coble, H. D. (1997). Initial weed densities affect no-tillage weed management with a rye (Secale cereale) cover crop. WEED TECHNOLOGY, 11(3), 473–477. https://doi.org/10.1017/s0890037x00045279