Melo, Heloisa Mara de, Alberto Kazushi Nagaoka, and Francisco Cleber Vieira. 2012. “Influence of Agricultural Subsidies and New Technologies Trends in the Brazilian Wheeled Tractors Commercialization”. Revista De Ciências Agroveterinárias 11 (1). Lages:70-76. https://revistas.udesc.br/index.php/agroveterinaria/article/view/5239.