Soto, E., Fernandes, N., Sánchez, S., Leão, L., Ribeiro, Z., Ferreira, R. and Ruiz, I. (2019) “Models of Sexually Transmitted Diseases”, European Journal of Engineering Research and Science, 4(10), pp. 4-8. doi: 10.24018/ejers.2019.4.10.1543.