Souza, P. A. C. A. e, C. M. Dias, and E. F. de Arruda. “Optimal Control Model for Vaccination Against H1N1 Flu”. Semina: Ciências Exatas E Tecnológicas, vol. 41, no. 1, June 2020, pp. 105-14, doi:10.5433/1679-0375.2020v41n1p105.