DR. ROHINI DESPANDE, CHETHANA K., DEEPIKA N., G. GIRISH REDDY. The Touch Less Door Bell. International Journal of Modern Agriculture, [S. l.], v. 10, n. 2, p. 3590 - 3596, 2021. Disponível em: http://modern-journals.com/index.php/ijma/article/view/1211. Acesso em: 24 apr. 2024.