Yashvardhini, N., D. Jha, A. Kumar, K. Sayrav, and M. Gaurav. “Genetic Variations in the Orf7a Protein of SARS-CoV-2 and Its Possible Role in Vaccine Development”. Biomedical Research and Therapy, Vol. 8, no. 8, Aug. 2021, pp. 4497-04, doi:10.15419/bmrat.v8i8.688.