“Analisis Dan Implementasi Algoritma Kriptografi Playfair Chiper Dan Algoritma Kompresi Run Length Encoding Dalam Pengamanan Dan Kompresi Data Teks: Analysis and Implementation of Playfair Chiper Cryptography Algorithm and Run Length Encoding Compression Algorithm in Security and Compression of Text Data” (2018) Talenta Conference Series: Science and Technology (ST), 1(1), pp. 069–077. doi:10.32734/st.v1i1.191.