SyamsidarS., MunandarJ. M., CahyadiE. R., and KusumastutiA. “Strategy of Avian Influenza Vaccine Development As a Step to Control”. Indonesian Journal of Business and Entrepreneurship (IJBE), Vol. 5, no. 1, Jan. 2019, p. 1, doi:10.17358/ijbe.5.1.1.