URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/sequence-analysis-of-the-spike--rna-dependent-rna-polymerase--and-protease-genes-reveals-a-distinct-evolutionary-pattern-of-sars-cov-2-varia-dcfcd07e645d245babe887e5e2daa016/d091585f-ebef-11ee-ada0-e4434b0aade8
