LOKESH S; SAKTHIVEL N. Online Courier Delivery Acknowledgement System . International Journal of Progressive Research in Science and Engineering , [S. l.], v. 3, n. 03, p. 57–58, 2022. Disponível em: https://journal.ijprse.com/index.php/ijprse/article/view/515. Acesso em: 3 may. 2024.