Monika, P., B. Ruchjana, K. Parmikanti, and A. Abdullah. “INTEGRATED OF WEB APPLICATION RSHINY FOR MARKOV CHAIN AND ITS APPLICATION TO THE DAILY CASES OF COVID-19 IN WEST SUMATERA”. BAREKENG: Jurnal Ilmu Matematika Dan Terapan, Vol. 17, no. 4, Dec. 2023, pp. 2397-10, doi:10.30598/barekengvol17iss4pp2397-2410.