MÜLLER, Joachim; KLEINKNECHT, Christoph; KÖLLER, Karlheinz. Optosensor. agricultural-engineering.eu, [S. l.], v. 52, n. 2, p. 76–77, 1997. DOI: 10.15150/lt.1997.2557. Disponível em: https://www.agricultural-engineering.eu/landtechnik/article/view/1997-52-2-076-077. Acesso em: 29 märz. 2024.