Muller, I.H., Carlos, E.S., Loreto, A.B., Soubhia, A.L. e Picoloto, C.B. 2020. Analysis of solutions of differential equations of vibratory systems with varied external forces. Ciência e Natura. 42, (jan. 2020), e89. DOI:https://doi.org/10.5902/2179460X41890.