SKONIESKI, F. R.; VIÉGAS, J.; CRUZ, P.; NORNBERG, J. L.; BERMUDES, R. F.; GABBI, A. M. <b>Dynamics of nitrogen concentration on intercropped ryegrass</b&gt; - 10.4025/actascianimsci.v34i1.12661. Acta Scientiarum. Animal Sciences, v. 34, n. 1, p. 1-6, 22 set. 2011.