M. Bidram, F. Behzadian, F. Fotouhi, and M. Fazeli, “Cloning and prokaryotic expression of the globular head domain of hemagglutinin antigen (HA1) of influenza A (H3N2) virus in Escherichia coli and Bacillus subtilis”, Arch Med Lab Sci, vol. 3, no. 1, Nov. 2019.