NG, David. Wearable smart device incorporating real-time clock module and alcohol sensor. KnE Engineering, [S. l.], v. 2, n. 1, p. 328–333, 2017. DOI: 10.18502/keg.v2i2.633. Disponível em: https://knepublishing.com/index.php/KnE-Engineering/article/view/633. Acesso em: 4 sep. 2025.