Figueiredo Silva, Felipe, Marcelo Jose Braga, and Joao Carlos Garcia. “Link Between R&D Intensity and Market Concentration: Analysis of Brazilian Corn and Soybean Seed Markets”. Italian Review of Agricultural Economics 73, no. 2 (November 6, 2018): 105–124. Accessed May 5, 2024. https://oajournals.fupress.net/index.php/rea/article/view/9936.