M. SENTHIL KUMAR; S. KALAIMATHI; G. KARTHIK RAJAN; S. KATHIRAVAN; M. KAVIPRIYA. No queue billing purchase system . International journal of intellectual advancements and research in engineering computations, [S. l.], v. 6, n. 1, p. 354–357, 2018. Disponível em: https://ijiarec.com/ijiarec/article/view/464. Acesso em: 3 may. 2024.