PRISTIWANTO, P.; HERI SUNANDAR; BERTO NADEAK. Analysis and Implementation of PlayFair Chipper Algorithm in Text Data Encoding Process. Jurnal Info Sains : Informatika dan Sains, [S. l.], v. 10, n. 2, p. 19–23, 2020. DOI: 10.54209/infosains.v10i2.33. Disponível em: https://ejournal.seaninstitute.or.id/index.php/InfoSains/article/view/33. Acesso em: 1 jun. 2025.