F. T. G. . Sousa, C. . Nunes, C. M. . Romano, E. C. . Sabino, and M. A. . González-Cardenete, “Anti-Zika virus activity of several abietane-type ferruginol analogues”, Rev. Inst. Med. Trop. São Paulo, vol. 62, p. e97, Dec. 2020, doi: 10.1590/s1678-9946202062097 .