SOURELL, Heinz; THÖRMANN, Hans-Heinrich. Beregnungsmaschinen-Management. agricultural engineering.eu, [S. l.], v. 56, n. 2, p. 84–85, 2001. DOI: 10.15150/lt.2001.1715. Disponível em: http://195.37.233.11/landtechnik/article/view/2001-56-2-084-085. Acesso em: 19 mai. 2024.