dos Santos, Henrique Pereira, João Carlos Ignaczak, and Itacir Sandini. 1996. “Cultural Productivity of Crop Rotation Systems for Barley, under No-Tillage”. Pesquisa Agropecuaria Brasileira 31 (10):721-27. https://doi.org/10.1590/S1678-3921.pab1996.v31.4542.